Question

the electronic configuration 2, 8, 2?​

Answer 1

Explanation:

2,8,2 is 12

1s² 2s² 2p6 3s²

It's magnesium Mg

Answer 2

Answer:

By s,p,d ,f rule

1s2 2s2 2p6 3s2 .

S sub shell contains =2 electrons

p= 6

d=10

f=14

The element is sodium.

If you like my answer Please mark me as brainliest. . . . .