The statement that is not correct is

Options

A. Angular quantum number signifies the shape of orbital
B. Energies of stationary states in hydrogen like atoms are inversely proportional to square root of principle of quantum number.
C. Total number of nodes for 3s orbital is three
D. The radius of first orbit of `He^(+)`is half that of the first orbit of hydroegn atom.

Answer

C

Explanation

No of nodes for any real `=n-l-1`
For 3s orbital `n=3,l=0`
`:.` No. of nodes `=3-0-1=2`
Therefore statement (C) is not correct.