Question

which phrase best describes a period on the periodic table? (1 point) a column of elements elements that have the same number of electrons a row of elements elements that are in the same group

Explanation:

In the periodic table, a period is a row of elements. Elements in a period have the same number of electron - shells. Columns are called groups where elements have similar chemical properties due to the same number of valence electrons.

Answer:

a row of elements