An atom has `2K,8L` and `5M` electron write its eklectronic configuration and indication the following in it :

Options

A. Number of sub-shells
B. Number of orbitals
C. Number of unpaired electrons
D. Number of electron having `l= 1`

Explanation

In the given atom then are `2 + 8 + 5 = 15` electron .The el,ectronic configuration of the atom is
`1s^(2)2s^(2)2p^(6)3s^(2)3p_(x)^(1)3p_(y)^(1)3p_(z)^(1)`
a.Number of sub-shell is `5`
b.Number of orbital is `9`
b..Number of unpaired electron is `3`
b..Number of electron having `l= 1` is `9`