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Which of the following are correct ?

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All s-orbitals have the same orbital angular momentum

The angular momentum of the electron in 4^th orbit is $2 h / π$

The magnetic moment of $C u^{2 +}$ ion = 1.732 B.M

All d-orbitals have two nodal planes

answer is A.

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Detailed Solution

(A) Correct because orbital angular momentum is $\sqrt{1 (1 + 1)} h / 2 π$

(B) Correct because angular momentum in 4^th orbit $= \frac{n h}{2 π} = 4 \times \frac{h}{2 π} = \frac{2 h}{π}$

(D) Wrong because $d_{3}^{2}$ orbital has no nodal plane

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