Question

Find group period and block for the following element having atomic number 53 75 and 55

Answer 1

Answer:

The electronic configuration of the element with atomic number 12 is 1s

2

2s

2

2p

6

3s

2

.

The number of valence electrons =2, which means it belongs to group II A.

The valence shell is 3, which means it belongs to the third period.