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Question

What are the values of orbital angular momentum of the electrons in the orbitals 1s, 3s, 3d and 2p ?

A
0, 0, 6 , 2
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B
1, 1, 4 , 2
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C
0, 1, 6 , 3
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D
0, 0, 20, 6
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Solution

The correct option is A 0, 0, 6 , 2
l is azimuthal quantum number.
l = 0 s subshell
l = 1 p subshell
l = 2 d subshell
l = 3 f subshell
Here, = h2π
Orbital angular momentum = l(l+1)×
For s subshell, l = 0, therefore for 1s and 3s
Orbital angular momentum =l(l+1)× = 0
For 3d, l = 2, therefore l(l+1)× = 2(2+1)× = 6
For 2p, l = 1, therefore 1(1+1)× = 1(1+1)× = 2


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