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  4. The equivalent mass of a trivalent element is 17. The molecular mass of its chloride is

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Q. The equivalent mass of a trivalent element is $17$. The molecular mass of its chloride is

KCETKCET 2022

Solution:

Let the metal be $M$. It is trivalent.
Formula of chloride $= MCl _{3}$
At. Mass of $M =17 \times 3=51$
Molecular mass of $MCl _{3}=51+(35.5 \times 3)=157.5$