Covalent Bonding

Covalent bond is the sharing of the VALENCE

ELECTRONS of each atom in a bond

Recall: Electrons are divided between core and valence electrons.

ATOM core valence

Na 1s2 2s2 2p6 3s1 [Ne] 3s1

Br [Ar] 3d10 4s2 4p5 [Ar] 3d10 4s2 4p5

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