Ionic vs Covalent Bonds

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Learn the difference between an Ionic bond and a Covalent bond.

Ionic bonds are formed from metals and nonmetals or a metal and a polyatomic ions which are typically made of nonmetals

Covalent bonds are formed from two or more nonmetals

If you look at the periodic table you can locate this stairstep. Elements to the left of the stair step are metals except for hydrogen which is a nonmetal and to the right are nonmetals.
Ok look at some examples of ionic bonds.
Sodium chloride
NaCl
It’s made of sodium a metal and chlorine a nonmetal

What about sulfur dioxide?
SO2
It’s made of sulfur and oxygen which are both nonmetals so it is a covalent bond.

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