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Question

# The number of radial nodes and angular nodes are the same in which of the following orbital/orbitals? (A) 3p (B) 4p (C) 5d (D) 6f

A
A only
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B
A and C both
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C
B and C both
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D
D only
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Solution

## The correct option is B A and C bothWe know, Number of radial nodes = n-l-1 Number of angular nodes = l For 3p: Number of radial nodes = n−l−1=3−1−1=1 Number of angular nodes =l=1 For 4p: Number of radial nodes = n−l−1=4−1−1=2 Number of angular nodes = l=1 For 5d: Number of radial nodes = n−l−1=5−2−1=2 Number of angular nodes = l=2 For 6f: Number of radial nodes = n−l−1=6−3−1=2 Number of angular nodes = l=3 Thus, 3p and 5d orbitals have the same number of radial nodes and angular nodes.

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