Question

The number of electrons present in s-subshell within $Mn$.

Answer 1

The atomic number of Manganese is 25

The ground state electronic configuration of Mn is:

$1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^5$

The s-subshell has only one orbital. Here Mn has 1s,2s,3s and 4s orbitals and all are completely filled. So, we have 4s type orbitals.