Group
| Also Known As | Group, periodic table group, chemical family, column of the periodic table |
|---|
What is Group?
A vertical column in the periodic table. Elements in the same group have the same number of valence electrons, similar electron configurations, and similar chemical properties. Group numbers 1-18 (IUPAC) or IA-VIIIA (traditional) indicate the number or type of valence electrons.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A vertical column in the periodic table. Elements in the same group have the same number of valence electrons, similar electron configurations, and similar chemical properties. Group numbers 1-18 (IUPAC) or IA-VIIIA (traditional) indicate the number or type of valence electrons.
Group relationships allow chemists to predict properties of elements and their compounds by analogy within a group. The chemistry of unknown Group 14 elements can be estimated from known C, Si, Ge behaviour. Group properties guide material selection in chemistry, electronics, and medicine.
Elements in the same group often share hazard profiles: all alkali metals (Group 1) react with water; all halogens (Group 17) are oxidising and toxic; all noble gases are asphyxiants at high concentration. Group membership is a useful first guide for hazard assessment.