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
• B. A and C both
• C. B and C both
• D. D only

Answer 1

The correct option is B A and C both

We 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.