How Electrons are distributed in the shells

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I am going to describe the important topic of chemistry ,the electronic configuration or how electrons are distributed in the shell.

Electrons revolves around the nucleus in fixed energy level called shell.Shells are represented by capital alphabet.

• The first shell is K shell.Maximum capacity of K shell is 02 electrons
• The 2nd shell is L shell.Its capacity to hold electrons is 08.
• The 3rd shell is M shell .Its capacity is 18 electrons.
• The 4th shell is N shell its capacity is 32 electrons

K shell has lowest energy and it increases gradually up to N shell.Electrons first fill the lowest energy shell i.e K shell and then L,M,N