Question

columns in the periodic table are called (two answers) select all correct options families periods groups none of the above

Explanation:

In the periodic table, columns are known by two names. Elements in the same column have similar chemical properties. "Families" is a common term as elements in a column share characteristics like a family. "Groups" is the more formal term used in chemistry to denote these columns. Periods are rows, not columns.

Answer:

families, groups