Question

Element $X$ is strongly electropositive and element $Y$ is strongly electronegative. Both are univalent. The compound formed would be :

• A. $X^{+}{Y}^{-}$
• B. $X^{-}{Y}^{+}$
• C. $X-Y$
• D. $X\to Y$

Answer 1

The correct option is A $X^{+}{Y}^{-}$

The compound formed is an ionic compound $X^{+}{Y}^{-}$ with strong electrostatic forces of attraction between cation and anion. X will lose an electron to form $X^{+}$ ion and Y will gain an electron to form $Y^{-}$ ion.