Có: \(\left\{{}\begin{matrix}m_{Mg}=95,25,26\%=24\left(g\right)\\m_{Cl}=95-24=71\left(g\right)\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}n_{Mg}=\dfrac{24}{24}=1\left(mol\right)\\n_{Cl}=\dfrac{71}{35,5}=2\left(mol\right)\end{matrix}\right.\)
`=>A: MgCl_2`