Question

In which period of the periodic table is an element with atomic number 20
placed?

a) 4
b) 3
c) 2
d) 1
​

Answer 1

Answer:

The element 20 I.e. calcium is placed in period 2.

Answer 2

Answer:

HEYA FRIEND HERE IS YOUR ANSWER

• Atomic no. 20 is Calcium.
• Calcium is an alkaline earth metal and belongs to 2nd group and 4th period.

                  HOPE IT HELPS YOU!!!!