Question

Valency of an element X is 3 while that of Y is 1, write the formula of the compounds formed when each of them separately combines with oxygen.

And how'd you do it?

Additional question:-
how to make this question in colour?​

Answer 1

Answer:

oxide of X is X2O3

oxide of Y is Y2O

for doing this just remember class 9 chemistry..

formula making method by cross multiplication of valancies of the elements..

I don't know about the additional question..sorry for that...

hope my first solution will help u..

Answer 2

Answer:

oxide of x:- X203

oxide of y:- Y20

Explanation:

MARK BRAINLIEST