Eric Nicholas K's answer to Ria's Secondary 3 Biology Singapore question.
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
The first step in doing this question is to identify the charges on X and Y.
Since X has lost two electrons, its charge is 2+. Since Y has gained one electron, its charge is 1-.
To counteract the 2+ charge, we need a 2- charge. But Y only has a charge of 1-, so we need two of Y to balance out the charges in one of X.
So the formula is XY2.
Since X has lost two electrons, its charge is 2+. Since Y has gained one electron, its charge is 1-.
To counteract the 2+ charge, we need a 2- charge. But Y only has a charge of 1-, so we need two of Y to balance out the charges in one of X.
So the formula is XY2.
Date Posted:
5 years ago
360 Tutoring Program