If atom X with six electrons in its outermost shell combines with atom Y with one electron in its outermost shell to form an ionic compound, then?
- six atoms of X will combine with one of Y
- two atoms of X will combine with six of Y
-
one atom of X will combine with two of Y
- two atoms of X will combine with one of Y
- one atom of X will combine with six of Y
The correct answer is: C
Explanation
- When an element in group 1 takes part in a reaction, its atoms lose their outer electron and form positively charged ions , called cations .
- Group 6 elements, have 6 valence electrons and will tend to take 2 electrons and have a valency of -2.
- Hence; one atom of element X will require two atoms of Y
- To form a compound XY\(_2\)