A) angular quantum number signifies the shape of the orbital.
B) energies of stationary states in hydrogen like atoms is inversely proportional to the square of the principal quantum number.
C) total number of nodes for 3s orbital is three.
D) the radius of the first orbit of He+ is half that of the first orbit of hydrogen atom.
Correct Answer: C
Solution :
: No. of nodes for any orbital \[=n-l-1\] For 3s-orbital, \[n=3\]and \[l=0\] Hence, no. of nodes for 35-orbital \[=3-1=2\]
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