Question

If X ion has 10 neutrons and 9 protons, then the
electronic configuration of the atom of the elements X
is.
YA] 2,8,1
M
[B] 2,7
[D] 2,8,8
[C] 2,8​

Answer 1

Answer:

b)2,7

Explanation:

The number of proton is same as that of electron