Question

what are the vertical (up and down) columns on the periodic table called?
rows
blocks
groups or families
periods
question 4 (1 point)
listen
which element is a nonmetal?
gold
oxygen
iron
silver

Explanation:

In the periodic table, vertical columns are called groups or families. They contain elements with similar chemical properties due to having the same number of valence - electrons. Non - metals are elements that lack metallic properties. Gold, iron, and silver are metals, while oxygen is a non - metal.

Answer:

1. C. Groups or families
2. B. Oxygen