Question

In which period do potassium and calcium lie in the Modern periodic table

Answer 1

Period 4

Step-by-step explanation:

On the modern periodic table, potassium and calcium lie in the fourth period, Period 4.

Elements are arranged on the periodic table based on their atomic numbers or number of protons.

• Period 4 is made up of elements that have 4 energy levels.
• Potassium and calcium have 4 energy levels and belongs to the fourth period.