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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




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)