Which of the following is the maximum numbers of electrons that can be present in M-shell ?
Answer: (3) 18
The maximum number of electrons that can found in a shell
Electron Capacity = 2n2
where, n = the number of energy level.
The energy level of M – shell = 3
then , the number of electrons in M – shell = 2 x 32 = 2 x 9
= 18 electrons
(M–shell), s, p, d, 18 (2 in s, 6 in p, 10 in d)