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Element Folio

Category: Elements & Periodic Table

Element profiles, periodic trends, groups and periodic-table reference guides.

  • Barium (Ba): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Barium (Ba) has atomic number 56 and is classified as a alkaline earth metal. It sits in Group 2, period 6 of the periodic table. Its practical relevance includes oil-and-gas drilling fluids, ceramics, glass, fireworks and medical contrast compounds.

    Quick facts

    Atomic number 56 Symbol Ba
    Relative atomic mass 137.327 State at room temperature Solid
    Group 2 Period 6
    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.

    Barium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Barium matters

    In engineering and technology, barium is associated with oil-and-gas drilling fluids, ceramics, glass, fireworks and medical contrast compounds. 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 barium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Barium 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) · Cesium (Cs)

    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

  • Lanthanum (La): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Lanthanum (La) has atomic number 57 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes petroleum catalysts, optical glass, nickel-metal-hydride batteries and specialty alloys.

    Quick facts

    Atomic number 57 Symbol La
    Relative atomic mass 138.90547 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Lanthanum belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Lanthanum matters

    In engineering and technology, lanthanum is associated with petroleum catalysts, optical glass, nickel-metal-hydride batteries and specialty 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 lanthanum depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Lanthanum 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

    Barium (Ba) · Cerium (Ce)

    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

  • Cerium (Ce): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Cerium (Ce) has atomic number 58 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes catalytic converters, glass polishing, self-cleaning ovens, alloys and glass additives.

    Quick facts

    Atomic number 58 Symbol Ce
    Relative atomic mass 140.116 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Cerium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Cerium matters

    In engineering and technology, cerium is associated with catalytic converters, glass polishing, self-cleaning ovens, alloys and glass 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 cerium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Cerium 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

    Lanthanum (La) · Praseodymium (Pr)

    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

  • Praseodymium (Pr): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Praseodymium (Pr) has atomic number 59 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes high-strength magnets, aerospace alloys, specialty glass and ceramic colorants.

    Quick facts

    Atomic number 59 Symbol Pr
    Relative atomic mass 140.90766 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Praseodymium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Praseodymium matters

    In engineering and technology, praseodymium is associated with high-strength magnets, aerospace alloys, specialty glass and ceramic colorants. 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 praseodymium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Praseodymium 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

    Cerium (Ce) · Neodymium (Nd)

    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

  • Neodymium (Nd): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Neodymium (Nd) has atomic number 60 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes high-performance permanent magnets, lasers, motors, generators and specialty glass.

    Quick facts

    Atomic number 60 Symbol Nd
    Relative atomic mass 144.242 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Neodymium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Neodymium matters

    In engineering and technology, neodymium is associated with high-performance permanent magnets, lasers, motors, generators and specialty glass. 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 neodymium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Neodymium 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

    Praseodymium (Pr) · Promethium (Pm)

    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

  • Promethium (Pm): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Promethium (Pm) has atomic number 61 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes research, specialized nuclear batteries and limited isotope-based measurement applications.

    Quick facts

    Atomic number 61 Symbol Pm
    Relative atomic mass [145] State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Promethium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Promethium matters

    In engineering and technology, promethium is associated with research, specialized nuclear batteries and limited isotope-based measurement 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 promethium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Promethium 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

    Neodymium (Nd) · Samarium (Sm)

    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

  • Samarium (Sm): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Samarium (Sm) has atomic number 62 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes samarium-cobalt magnets, neutron-absorbing materials, catalysts and specialized electronics.

    Quick facts

    Atomic number 62 Symbol Sm
    Relative atomic mass 150.36 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Samarium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Samarium matters

    In engineering and technology, samarium is associated with samarium-cobalt magnets, neutron-absorbing materials, catalysts and specialized electronics. 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 samarium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Samarium 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

    Promethium (Pm) · Europium (Eu)

    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

  • Europium (Eu): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Europium (Eu) has atomic number 63 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes red and blue phosphors, anti-counterfeiting features, LEDs and display technologies.

    Quick facts

    Atomic number 63 Symbol Eu
    Relative atomic mass 151.964 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Europium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Europium matters

    In engineering and technology, europium is associated with red and blue phosphors, anti-counterfeiting features, LEDs and display technologies. 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 europium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Europium 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

    Samarium (Sm) · Gadolinium (Gd)

    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

  • Gadolinium (Gd): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Gadolinium (Gd) has atomic number 64 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes MRI contrast compounds, neutron capture, magnetic refrigeration research and specialty alloys.

    Quick facts

    Atomic number 64 Symbol Gd
    Relative atomic mass 157.25 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Gadolinium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Gadolinium matters

    In engineering and technology, gadolinium is associated with MRI contrast compounds, neutron capture, magnetic refrigeration research and specialty 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 gadolinium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Gadolinium 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

    Europium (Eu) · Terbium (Tb)

    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

  • Terbium (Tb): Properties, Uses and Periodic Table Guide

    Periodic Table Guide

    Terbium (Tb) has atomic number 65 and is classified as a lanthanide. It sits in f-block series, period 6 of the periodic table. Its practical relevance includes green phosphors, magnetostrictive alloys, solid-state devices and specialty magnets.

    Quick facts

    Atomic number 65 Symbol Tb
    Relative atomic mass 158.92535 State at room temperature Solid
    Group f-block Period 6
    Classification lanthanide Block f-block

    Position in the periodic table

    Lanthanides are f-block metals known for closely related chemistry and valuable magnetic, optical and catalytic properties. They are important in permanent magnets, phosphors, lasers, catalysts and advanced electronic systems.

    Terbium belongs to period 6. Its position helps explain recurring trends such as atomic size, bonding behavior, oxidation states and the way it interacts with neighboring elements.

    Why Terbium matters

    In engineering and technology, terbium is associated with green phosphors, magnetostrictive alloys, solid-state devices and specialty magnets. 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 terbium depends on concentration and interaction with the other constituents.

    Safety and handling

    The hazards associated with Terbium 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

    Gadolinium (Gd) · Dysprosium (Dy)

    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