Question

Total number of nodes in 4f orbital is
(1) Zero
(2) One
(3) Two
(4) Three
​

Answer 1

With the help of quantum number(n) and Azimuthal quantum number (l) we can find the number of nodes :

Formula :

number of nodes = n - 1.

Angular nodes = l

Radial nodes = no of nodes - angular nodes.

so, 4f orbital has 3 number of nodes, Angular nodes is 3 ( s=0,p=1,d=2,f=3) and Radial nodes is Zero.