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The electrons identified by quantum numb...

The electrons identified by quantum number n and l,
(a) n=4,l=1
(b) n=4, l=0
(c) n=3, l=2
(d) n=3,l=1 can be placed in order of increasing energy as-

A

`dltbltclta`

B

`bltdltaltc`

C

`altcltbltd`

D

`cltdltblta`

Text Solution

Verified by Experts

The correct Answer is:
A
(a) `n=4,l=1` (p-subshell), so 4p
(b) n=4, l=0 (s-subshell), so 4s
(c) n=3, l=2 (d-subshell), so 3d
(d) n=3, l=1 (p-subshell), so 3p
Energy order of the subshells: `3p lt 4s lt 3d lt 4p`.
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