In the compound MgCl2, the subscript 2 indicates that

Athere are two magnesium ions for each ion of chlorine
Bthe chloride ion is twice the size of the magnesium ion.
Cmagnesium and chlorine form a double covalent bond.
Dthere are two chloride ions for each magnesium ion.

Verified Answer :

lime52

The correct answer is answer choice D, there are two chloride ions for each magnesium ions. Subscripts always indicate the number of atoms, or ions, present in the molecule. The 2 refers to the element directly to its left, so answer choice A is reversed; there are 2 chloride ions for each magnesium ion, not the other way around. Answer choice B and C are incorrect because the subscript refers to the number of atoms, not the size of the atoms or the type of bond.

Answer:

The chloride ion accepted two electrons from the magnesium ion.

Explanation: