Question

how many electrons are present in m shell of an element with atomic number 20​

Answer 1

Answer:

The element having atomic number 20 is calcium(Ca).

The electronic configuration of Calcium is ( 2,8,8,2).

K shell - 2 electrons

L shell - 8 electrons

M shell - 8 electrons

N shell - 2 electrons

Hence , the M shell of an element with atomic number

20 has 8 electrons.