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  • Technetium (Tc): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Technetium (Tc) has atomic number 43 and is classified as a transition metal. It sits in Group 7, period 5 of the periodic table. Its practical relevance includes medical diagnostic imaging and research involving short-lived radioactive isotopes.

    Quick facts

    Atomic number 43 Symbol Tc
    Relative atomic mass [98] State at room temperature Solid
    Group 7 Period 5
    Classification transition metal Block d-block

    Position in the periodic table

    Transition metals occupy the d-block and are central to structural alloys, catalysis, electrical systems and high-temperature engineering. Many display multiple oxidation states and form useful intermetallics or complex alloys.

    Technetium belongs to period 5. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Technetium matters

    In engineering and technology, technetium is associated with medical diagnostic imaging and research involving short-lived radioactive isotopes. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of technetium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Technetium depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Manganese (Mn) · Rhenium (Re) · Bohrium (Bh) · Molybdenum (Mo)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Molybdenum (Mo): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Molybdenum (Mo) has atomic number 42 and is classified as a transition metal. It sits in Group 6, period 5 of the periodic table. Its practical relevance includes alloy steels, high-temperature components, catalysts, lubricants and corrosion-resistant alloys.

    Quick facts

    Atomic number 42 Symbol Mo
    Relative atomic mass 95.95 State at room temperature Solid
    Group 6 Period 5
    Classification transition metal Block d-block

    Position in the periodic table

    Transition metals occupy the d-block and are central to structural alloys, catalysis, electrical systems and high-temperature engineering. Many display multiple oxidation states and form useful intermetallics or complex alloys.

    Molybdenum belongs to period 5. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Molybdenum matters

    In engineering and technology, molybdenum is associated with alloy steels, high-temperature components, catalysts, lubricants and corrosion-resistant alloys. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of molybdenum depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Molybdenum depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Chromium (Cr) · Tungsten (W) · Seaborgium (Sg) · Niobium (Nb)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Niobium (Nb): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Niobium (Nb) has atomic number 41 and is classified as a transition metal. It sits in Group 5, period 5 of the periodic table. Its practical relevance includes superconducting magnets, high-strength low-alloy steels, superalloys and electronic resonators.

    Quick facts

    Atomic number 41 Symbol Nb
    Relative atomic mass 92.9064 State at room temperature Solid
    Group 5 Period 5
    Classification transition metal Block d-block

    Position in the periodic table

    Transition metals occupy the d-block and are central to structural alloys, catalysis, electrical systems and high-temperature engineering. Many display multiple oxidation states and form useful intermetallics or complex alloys.

    Niobium belongs to period 5. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Niobium matters

    In engineering and technology, niobium is associated with superconducting magnets, high-strength low-alloy steels, superalloys and electronic resonators. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of niobium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Niobium depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Vanadium (V) · Tantalum (Ta) · Dubnium (Db) · Zirconium (Zr)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Zirconium (Zr): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Zirconium (Zr) has atomic number 40 and is classified as a transition metal. It sits in Group 4, period 5 of the periodic table. Its practical relevance includes nuclear fuel cladding, chemical equipment, refractories, ceramics and zirconia engineering components.

    Quick facts

    Atomic number 40 Symbol Zr
    Relative atomic mass 91.224 State at room temperature Solid
    Group 4 Period 5
    Classification transition metal Block d-block

    Position in the periodic table

    Transition metals occupy the d-block and are central to structural alloys, catalysis, electrical systems and high-temperature engineering. Many display multiple oxidation states and form useful intermetallics or complex alloys.

    Zirconium belongs to period 5. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Zirconium matters

    In engineering and technology, zirconium is associated with nuclear fuel cladding, chemical equipment, refractories, ceramics and zirconia engineering components. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of zirconium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Zirconium depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Titanium (Ti) · Hafnium (Hf) · Rutherfordium (Rf) · Yttrium (Y)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Yttrium (Y): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Yttrium (Y) has atomic number 39 and is classified as a transition metal. It sits in Group 3, period 5 of the periodic table. Its practical relevance includes phosphors, advanced ceramics, superalloys, lasers and high-temperature superconducting materials.

    Quick facts

    Atomic number 39 Symbol Y
    Relative atomic mass 88.9058 State at room temperature Solid
    Group 3 Period 5
    Classification transition metal Block d-block

    Position in the periodic table

    Transition metals occupy the d-block and are central to structural alloys, catalysis, electrical systems and high-temperature engineering. Many display multiple oxidation states and form useful intermetallics or complex alloys.

    Yttrium belongs to period 5. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Yttrium matters

    In engineering and technology, yttrium is associated with phosphors, advanced ceramics, superalloys, lasers and high-temperature superconducting materials. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of yttrium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Yttrium depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Scandium (Sc) · Lutetium (Lu) · Lawrencium (Lr) · Strontium (Sr)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Strontium (Sr): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Strontium (Sr) has atomic number 38 and is classified as a alkaline earth metal. It sits in Group 2, period 5 of the periodic table. Its practical relevance includes red pyrotechnics, ferrite magnets, ceramics, glass and medical isotope applications.

    Quick facts

    Atomic number 38 Symbol Sr
    Relative atomic mass 87.62 State at room temperature Solid
    Group 2 Period 5
    Classification alkaline earth metal Block s-block

    Position in the periodic table

    Alkaline earth metals are reactive s-block metals that commonly form +2 ions. Their compounds are important in construction, refractories, metallurgy, chemicals and biological systems.

    Strontium belongs to period 5. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Strontium matters

    In engineering and technology, strontium is associated with red pyrotechnics, ferrite magnets, ceramics, glass and medical isotope applications. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of strontium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Strontium depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Beryllium (Be) · Magnesium (Mg) · Calcium (Ca) · Rubidium (Rb)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Rubidium (Rb): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Rubidium (Rb) has atomic number 37 and is classified as a alkali metal. It sits in Group 1, period 5 of the periodic table. Its practical relevance includes research, atomic-frequency standards, specialty glass and photoelectric applications.

    Quick facts

    Atomic number 37 Symbol Rb
    Relative atomic mass 85.4678 State at room temperature Solid
    Group 1 Period 5
    Classification alkali metal Block s-block

    Position in the periodic table

    Alkali metals are highly reactive s-block metals with one valence electron. Their chemistry is dominated by +1 oxidation states, and they require careful handling because several react vigorously with air or water.

    Rubidium belongs to period 5. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Rubidium matters

    In engineering and technology, rubidium is associated with research, atomic-frequency standards, specialty glass and photoelectric applications. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of rubidium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Rubidium depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Hydrogen (H) · Lithium (Li) · Sodium (Na) · Krypton (Kr)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Krypton (Kr): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Krypton (Kr) has atomic number 36 and is classified as a noble gas. It sits in Group 18, period 4 of the periodic table. Its practical relevance includes specialty lighting, lasers, insulating window fills and scientific instrumentation.

    Quick facts

    Atomic number 36 Symbol Kr
    Relative atomic mass 83.798 State at room temperature Gas
    Group 18 Period 4
    Classification noble gas Block p-block

    Position in the periodic table

    Noble gases have filled valence shells and are relatively unreactive under ordinary conditions. Their inertness is valuable in lighting, welding, semiconductor processing, cryogenics and scientific instrumentation.

    Krypton belongs to period 4. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Krypton matters

    In engineering and technology, krypton is associated with specialty lighting, lasers, insulating window fills and scientific instrumentation. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of krypton depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Krypton depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Helium (He) · Neon (Ne) · Argon (Ar) · Bromine (Br)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Bromine (Br): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Bromine (Br) has atomic number 35 and is classified as a halogen. It sits in Group 17, period 4 of the periodic table. Its practical relevance includes flame-retardant chemistry, drilling fluids, water treatment and specialty organic synthesis.

    Quick facts

    Atomic number 35 Symbol Br
    Relative atomic mass 79.904 State at room temperature Liquid
    Group 17 Period 4
    Classification halogen Block p-block

    Position in the periodic table

    Halogens are reactive p-block elements that commonly form -1 ions and many important salts or organic compounds. Their industrial value is substantial, but elemental forms and some compounds can require strict corrosion, toxicity or containment controls.

    Bromine belongs to period 4. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Bromine matters

    In engineering and technology, bromine is associated with flame-retardant chemistry, drilling fluids, water treatment and specialty organic synthesis. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of bromine depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Bromine depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Fluorine (F) · Chlorine (Cl) · Iodine (I) · Selenium (Se)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons

  • Selenium (Se): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Selenium (Se) has atomic number 34 and is classified as a nonmetal. It sits in Group 16, period 4 of the periodic table. Its practical relevance includes photovoltaics, glassmaking, electronics, pigments and metallurgical additives.

    Quick facts

    Atomic number 34 Symbol Se
    Relative atomic mass 78.971 State at room temperature Solid
    Group 16 Period 4
    Classification nonmetal Block p-block

    Position in the periodic table

    Nonmetals show very different bonding and physical behavior from metals. They are essential to chemistry, energy, biological systems and many modern materials, often appearing as gases, molecular solids or network structures.

    Selenium belongs to period 4. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Selenium matters

    In engineering and technology, selenium is associated with photovoltaics, glassmaking, electronics, pigments and metallurgical additives. The importance of the element may come from the pure element itself, from compounds containing it, or from its role as an alloying, electronic, catalytic or nuclear material.

    Engineering and scientific context

    Material behavior should never be inferred from the element name alone. Purity, isotope composition, crystal structure, processing history, temperature and the surrounding chemical environment can all change performance. In alloys and compounds, the contribution of selenium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Selenium depend on its physical form, purity, compounds, process temperature and exposure route. Engineering decisions should use the applicable safety data sheet and project-specific risk assessment.

    Related elements

    Oxygen (O) · Sulfur (S) · Tellurium (Te) · Arsenic (As)

    Reference sources

    For authoritative element data and current standard atomic-weight guidance, consult the Royal Society of Chemistry Periodic Table and the IUPAC Periodic Table of the Elements.

    Continue exploring: Periodic Table · Materials Library · Material Properties · Comparisons