Which term describes a group of elements with similar chemical properties?

Which term describes a group of elements with similar chemical properties?

• A. Family
• B. Group
• C. Period
• D. Class

Answer: (A)

Elements are organized into families because those in the same family share similar chemical properties, driven by having the same number of valence electrons and similar electron configurations. The best term to describe a group of elements with these shared characteristics is “family,” since it highlights their related chemical behavior. For example, the noble gases form a family with very low reactivity, while the alkali metals form another family with high reactivity and a common +1 tendency. In many periodic-table descriptions, vertical columns are also called groups, but the term family is the common label used to emphasize the relatedness of the elements’ chemistry.

Elements are organized into families because those in the same family share similar chemical properties, driven by having the same number of valence electrons and similar electron configurations. The best term to describe a group of elements with these shared characteristics is “family,” since it highlights their related chemical behavior. For example, the noble gases form a family with very low reactivity, while the alkali metals form another family with high reactivity and a common +1 tendency. In many periodic-table descriptions, vertical columns are also called groups, but the term family is the common label used to emphasize the relatedness of the elements’ chemistry.