The valencies of two elements (a) and ( b) Element valency
A +1
B +2
(I) what is the formula of sulphate of A? (II) what is the formula of nitrate of B?
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Answer:Valency of element A=1+
Element B=2+
Explanation:
Valency of sulphate(so4)=2-
Valrncy of No3(nitrate)=1-
Therefore formula of sulphate with element A =A2SO4
Formula of nitrate wwith element B=B1(No3)2
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