The formula of oxides two elements x and y are xo and Y2O3 respectively.
1 find the valency of x and y.
2 Identify the groups in which they would be placed in the mordern periodic table.
3 Name one more element belonging to each of these groups.
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y2o3 will be Al2O3.
Y =Al,X=O
valency of Al is 3& O is 2
Mgo etc
Y =Al,X=O
valency of Al is 3& O is 2
Mgo etc
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