Find the valencies of the underlined elements or radicals in the following compounds.
BaCl2, PC1g, PCI, NH3, MgSO4, CaCO3, Na,o, Cao, Ca(OH)2, FeSO4,
FeCl3, Fe,O3, NaOH, Al(OH)3, Na,Co.
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Explanation:
Ba=+2
P=+1
Cl=-1
N is -3
S is +6
Ca is +2
Na is +1
O is -2
Fe is +3
Al is +3
Co is +2
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