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

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

BITSATBITSAT 2017

Solution:

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 $=2-1-1=0$