Q.

Which of the following options consist of only those orbitals which have the number of radial nodes exactly same as their angular nodes?

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a

1s,2s,3s

b

1s,3p,5d

c

1s,2p,3d

d

4f,5g,6h

answer is C.

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Detailed Solution

The number of radial nodes exactly same as their angular nodes is 1s,3p,5d.

For 1s:

Radial node count is n-l-1=1-0-1=0
Angular node count = l=0

For 5d:

Radial node count is = n-l-1=5-2-1=2
Angular node count = l=1

For 3p:
Radial node count = n-l-1=3-1-1=1
Amount of angular nodes = l=1

Hence, option C is correct.

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