Which term describes the vertical columns on the periodic table?

Which term describes the vertical columns on the periodic table?

• A. Periods
• B. Groups (Families)
• C. Blocks
• D. Elements

Answer: (B)

Vertical columns are called groups (also known as families). The idea is that elements in the same column have the same number of valence electrons, which leads to similar chemical properties and behaviors across the group. For example, the alkali metals form a column because each element has one valence electron and tends to form +1 ions, giving them very similar reactivity. This is different from periods, the horizontal rows that show how properties evolve as you add electron shells. The term blocks refers to the s-, p-, d-, and f-block regions, which describe orbital types involved in bonding, not the column itself. Elements is just a general term for the substances and doesn’t specify the table’s organization.

Vertical columns are called groups (also known as families). The idea is that elements in the same column have the same number of valence electrons, which leads to similar chemical properties and behaviors across the group. For example, the alkali metals form a column because each element has one valence electron and tends to form +1 ions, giving them very similar reactivity. This is different from periods, the horizontal rows that show how properties evolve as you add electron shells. The term blocks refers to the s-, p-, d-, and f-block regions, which describe orbital types involved in bonding, not the column itself. Elements is just a general term for the substances and doesn’t specify the table’s organization.