. If the atomic number of an element is

Best Answer

Correct Option is: (C)

Element with atomic no. 33 will have electronic configuration 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p³.

From the Aufbau principle we know that electrons are filled in order of increasing energy levels, which is determined by n+l. (In case of equal value of n+l, the orbital with greater value of n will have higher energy)

In the above case, 3d and 4p will have the same value of n+l i.e. 5, the 4p orbital will have higher energy. 

It has outermost electron of configuration  ns²np³, which is the same as the Nitrogen family. Hence, it will belong to the Nitrogen family i.e. group 15.