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For principle quantum number n=4,the tot...

For principle quantum number n=4,the total number of orbitals having l=3 is

A

3

B

7

C

5

D

9

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The correct Answer is:
B
n=4
`1s^(2)2s^(2)20^(6)3s^(2)3p^(6)3d^(10)4s^(6)4d^(10)4f^(14)`
l=3 only for f orbital.Thus the total number of orbital for l=3 is equal to 7 (because f contains seven orbitals).
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