Question

The number of radial nodes of $3s$ and $2p$ orbitals are respectively

• A. 2,0
• B. 0,2
• C. 1,2
• D. 2,2

Answer 1

Answer: (A)

2,0

Answer 2

The number of radial nodes of $3 s$ and $2 p$ orbitals respectively are $2$ and $o$ respectively.
Number of radial nodes $=n-1-1$
For $3 s$ orbital, number of radial nodes $=3-0-2=2$
For $2 p$ orbital, number of radial nodes $=2-1-1=0$