Theory’s

Question 1

What is Afubau principle?

Answer 1

Always fill up the electron orbits starting with the orbits closest to the nucleus.

Start from 1s, 2s, 2p…..

Question 2

What is Paulis Principle?

Answer 2

NEVER put 2 electrons on the same orbital, no two electrons can have the same 4 quantum numbers, the electrons must be 2 from opposite spin.

Question 3

What is Hunds principle?

Answer 3

Electrons are not poured in the “p” and “d” subshells until all orbitals have at least one electron.