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A + BC = AC + B
- One atom gives up an electron to the other, forming positive and negative ions.
- Total charge must be zero.
Two atoms share a pair of electrons, closing the shell for each of them.
Nonpolar Covalent Bond
- Bond between 2 nonmetals,
- Same electronegativity,
- Equal sharing of the bonding electron pair.
Polar Covalent Bond
A bond between 2 non-metals that have different electronegativities and have unequal sharing of the electrons.