# If M represents an element in Group 2, what would the formula of its chloride be?

$M {X}_{2}$ would be the formula of a Group 2 metal halide.
And representative examples: $\text{magnesium chloride, calcium chloride, strontium chloride}$, i.e. $M g C {l}_{2} , C a C {l}_{2} , S r C {l}_{2}$.