Question

Q272) Quantum numbers for some electrons are given below

A : n = 4, l = 1 B : n = 4, l = 0

C : n = 3, l = 2 D : n = 3, l = 1

The correct increasing order of energy of electrons

Q272) Quantum numbers for some electrons are given below

A : n = 4, l = 1 B : n = 4, l = 0

C : n = 3, l = 2 D : n = 3, l = 1

The correct increasing order of energy of electrons

SOLUTION

According to Pauli exclusion principle

(1) Larger the (n + l); Larger will be energy

(2) Same value of (n + l) ; bigger n ; more will be energy

Answer:(c)