Thank you for reporting, we will resolve it shortly
Q.
The phosphate of a metal has the formula $MHPO_4$. The formula of its chloride would be
AIIMSAIIMS 2010Classification of Elements and Periodicity in Properties
Solution:
Since the phosphate of a metal is $MHPO_{4}$ , therefore, metal M must be divalent, i.e., $M^{2+}$ . As a result, the formula of its chloride is $MCl_2.$