Online GK Series

This site is dedicated to the aspirants of competitive exams SSC, UPSC, Railways, Bank, GATE and NET


In an atom, the order of filling up of the orbitals is governed by

A Hund’s rule
B Aufbau’s principle
C Heisenberg’s uncertainly principle
D Pauli’s exclusion principle
Answer & Explanation
Option: [B]

Your Valuable Comments Please...

Please Like Us