Question

How electrons distributed in different orbitals or shells

Answer 1

Answer:

The Arrangement of Electrons in Different Orbits

The Arrangement of Electrons in Different OrbitsThe shells begin from the centre and gradually move outwards. So K shell will always have minimum energy. Similarly, L shell is a little away from nucleus so it will have higher energy than K shell. The outermost shell will have maximum energy

Answer 2

Answer:electrons distribute by 1 aufbau principle 2 Pauli's exclusion principle 3 hund's rule

Explanation:

According to first rule

Electrons should be filled in energy subshell in order of increasing energy values

2nd rule

In the same orbital two electrons should have opposite spin

(Because 2 electrons with same spin can't be in the same orbitals( it is impossible for polyelectron. Atoms to have the same value )

3rd rule

If degenerate orbitals are available and more than one electron are to be placed in them,they should be placed in separate orbitals with the same spin rather than putting them in the same orbitals with opposite spin