Question

1s2s2p63s23p63d24s2 find out group andperiod​

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.