No
Magnesium Chloride is MgCl2
The method I use to name ionic compounds is 'swap and drop'
Mg oxidation number is +2 and Cl oxidation number is -1
Mg^2+ Cl^-1
'swap'
Mg^1 Cl^2
'drop'
MgCl2
The answer would be D, all the above
Mole ratios<span> are important because mole ratios allow you change moles of a substance to moles of another substance.</span>