carbon has 4 electrons in the outer shell .how does carbon attain stable electrons configuration!if ur answer it points + i wil mark as brainlist so dont miss it..

Because all atoms need 8 electrons in their outer (valence) shell, carbon, having four valence electrons, achieves stability by bonding with 4 other atoms. When doing this, carbon “gains” four more electrons that bring its total valence electrons count up to eight.

For example:

In CH4, carbon bonds with 4 hydrogens and the bonds between the carbon and each hydrogen “add” 4 electrons to carbons outer shell.

It is platinum in the market value