Answer
a) $Cr(NO_2)_3$
b) $NaClO_4$
c) $Mg(HCO_3)_2$
d) $Ca(CH_3COO)_2$
Work Step by Step
a) $Cr(NO_2)_3$
b) $NaClO_4$
c) $Mg(HCO_3)_2$
d) $Ca(CH_3COO)_2$
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