Some chemists believe that satisfaction of the octet rule
should be the top criterion for choosing the dominant Lewis
structure of a molecule or ion. Other chemists believe that
achieving the best formal charges should be the top criterion.
Consider the dihydrogen phosphate ion, H2PO4
which the H atoms are bonded to O atoms. (a) What is the
predicted dominant Lewis structure if satisfying the octet
rule is the top criterion? (b) What is the predicted dominant
Lewis structure if achieving the best formal charges is the top
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