Periodic Table Guide
Antimony (Sb) has atomic number 51 and is classified as a metalloid. It sits in Group 15, period 5 of the periodic table. Its practical relevance includes flame-retardant systems, lead alloys, semiconductors, batteries and specialty glass.
Quick facts
Position in the periodic table
Metalloids sit near the boundary between metals and nonmetals. Their intermediate electrical and chemical behavior makes several of them especially important in semiconductors, glass, ceramics and electronic materials.
Antimony 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 Antimony matters
In engineering and technology, antimony is associated with flame-retardant systems, lead alloys, semiconductors, batteries 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 antimony depends on concentration and interaction with the other constituents.
Safety and handling
The hazards associated with Antimony 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
Nitrogen (N) · Phosphorus (P) · Arsenic (As) · Tin (Sn)
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.
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