Question

The sum of spins of all the electrons is the total spin (S)
and (2S+1) is called spin multiplicity of the electronic
configuration. Hund's rule defines the ground state
configuration of electrons in degenerate orbitals within
the same sub shell which have the same values of n
and !, states that in degenerate orbitals paring of
electrons does not occur unless and until all such
orbitals are filled singly with their parallel spin. A
spinning electron behaves as though it were a tiny bar
magnet with poles lying on the axis of spin. The
magnetic moment of any atom, ion or molecule due to
spin called spin -only magnetic moment (m) is given by
the formula
H. = n(n+2) B.M.
Where n = number of unpaired electron (s)
The spin multiplicity of Fe in its ground
state​

Answer 1

Answer:

Explanation:

Spin multiplcity =2S+1

option D