Q. 174.4( 9 Votes )
An element X of valency 3 combines with another element Y of valency 2. What will be the formula of the compound formed?
The formula of the compound formed is X2Y3.
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Write the chemical formula using criss-cross method:
(a) Ammonium sulphate
(b) Magnesium bicarbonate
(c) Barium nitrate
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