Question

The number of electron in the m shell of the element with atomic number 19 is

Answer 1

potassium (K)............

Answer 2

Answer: 8 electrons are present in M-shell of element with atomic number 19.

Explanation: The electrons are filled in a number of shells given as K, L M, N...

Electronic configurations of atomic number 19 is $1s^22s^22p^63s^23p^64s^1$

K-shell consists of 1s orbital

L-shell consists of 2s, 2p orbital

M-shell consists of 3s, 3p, 3d orbital

N-shell consists of 4s, 4p, 4d, 4f orbital

Electrons in 3s, 3p and 3d orbitals are 8, therefore

Electrons in M-shell are 8.