Question

the maximum number of electron in any main energy level is equal to (1) 2 (n+a) (2) n square (3) 2 n square (4) 4 n square​

Answer 1

Answer:

2)2n^2

Explanation:

example in n=3 shell of atom maximum number would be 18 ( 2 in 3s 6 in 3p 10 in 3d )