What happens when baking soda mixes with vinegar?
a. a new substance is formed
b. the substance stays the same
c. the baking soda days the same but the vinegar changes form.
d. the mixture turns from a liquid to a solid

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

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