Question

The elements potassium (K), Calcium (Ca), and Krypton(Kr) are all part of the same __________ on the periodic table.

A) Diagonal


B) Group


C) Period

Answer 1

The answer iiiiis...C: Period.

Here's why:

Potassium (K), Calcium (Ca), and Krypton (Kr) are all on the same diagonal line. This diagonal line is called a period.