Published by:
CGP EDU Academic Team
Published on: August 21, 2026
The quantum numbers of four electrons are given below :
I. 
II. 
III. 
IV. 
The correct decreasing order of energy of these electrons is
A
IV 
II 
III 
I
II III I
B
I 
III 
II 
IV
III II IV C
III 
I 
II 
IV
I II IV
D
I 
II 
III 
IV
II III IV
Text Solution
Verified by ExpertsThe correct answer is:
(I) ; (II) ; (III) ; (IV) ; (I) (II); (III) (IV); (I) (III); (II) (IV)
(I) 
; represents 
(II) 
; represents 
(III) 
; represents 
(IV) 
; represents 
Order of energy depends on the 
, greater is the 
value greater is the energy, if 
is same, then it depends on 
; if ' 
' is more, energy is more.
Step-1: According to ( 
)
Energy 
(I) 
(II) 
(III) 
(IV)
Step-2 : If 
, then energy increases
Energy 
(I) 
(III) 
(II) 
(IV)
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