Question

Calcium plus has completely filled k and l shells explain

Answer 1

According to Bohr's postulates of atoms , he placed atoms in discrete shells of orbits which is formulated by the formula of '2n^2' . Calcium's atomic no is 20 . So according to distrubution

K shell -2

L shell-8

M shell - 8

N shell - 2

so the upper limits of k shell and l shells are finished so those shells are filled

Hope it Helps !