Which statement is correct about the initial precipitate that forms when a $0.10 \mathrm{M} \mathrm{NaF}$ solution is added slowly to a solution that is $0.10 \mathrm{M}$ with respect to both $\mathrm{Ca}{\left({\mathrm{NO}}_3\right)}_2$ and $\mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2$?

${\mathbf{K}}_{\mathrm{ap}}$
${\mathrm{CaF}}_2$	$4\times {10}^{-11}$
${\mathrm{MgF}}_2$	$6.4\times {10}^{-9}$

 

The initial precipitate will contain ${\mathrm{MgF}}_2$ only.

The initial precipitate will contain ${\mathrm{CaF}}_2$ only.

 The initial precipitate will contain both ${\mathrm{CaF}}_2$ and ${\mathrm{MgF}}_2$ with more ${\mathrm{MgF}}_2$ .

The initial precipitate will contain both ${\mathrm{CaF}}_2$ and ${\mathrm{MgF}}_2$ with more ${\mathrm{CaF}}_2$ .