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The Brainliest Answer!
2015-10-15T19:50:20+05:30
the number of valencies on the both sides should be equal
EX:
BaCl2 +CaSO4------->CaCl2 +BaSO4
in BaCl2
chlorine has 2 valencies
in rhs:
CaCl2,so Cl2 is equal on both sides

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Please explain more how to get the valancies like LHS AND RHS
now ok?
Balancing ameans to ensure that no. Of atom of each elements are equal in both reactants and product side. It is independent of valency.