Question

Arrange the electrons represented by the following sets of quantum numbers in decreasing order of energy.
(i)`n=4, l=0, m_(l)=0, s=+1//2`, (ii) `n=3, l=1, m_(l)=1, s=-1//2`
(iii) ` n=3, l=2, m_(l)=0, s=+1//2`, (iv) `n=3, l=0, m_(l)=0, s=-1//2`

Answer 1

(i) represents 4s orbital , (ii) represents 3p orbital
(iii) represents 3d orbital, (iv) represents 3s orbitals
The decreasing order of energy , `3d gt 4s gt 3p gt 3s`.