defence exam Indian Coast Guard Assistant Commandant (GD/CPL) 2025 Test Series Chemistry Structure of Atom Atomic Structure
The quantum numbers n and l for four electrons are given below.
(i) n = 4, I = 1
(ii) n = 4, l = 0
(iii) n = 3, l = 2
(iv) n = 3, l = 1
The order of their energy from lowest to highest is:
1
(iii) < (i) < (iv) < (ii)
2
(i) < (ii) < (iii) < (iv)
3
(ii) < (iv) < (i) < (iii)
4
(iv) < (ii) < (iii) < (i)