Question

Formula of a compound having its constituent as X and Y is $X_2{Y}_3$. If the element forms a chloride then what will be the formula of that compound?

• A. X₂Cl
• B. XCl₂
• C. X₃Cl
• D. XCl₃

Answer 1

The correct option is D

XCl₃

By the formula $X_2{Y}_3$

$\begin{array}{ccc}Symbol:& X& Y\\ Valency:& 3& 2\end{array}$

By this we get the valency of X as 3.
So, its chloride will be:


The formula will be $XC{l}_3$