6C, 7A, 8B, 9C, 10B, 11C, 12A, 13C, 14C, 15B
I think that the answer is: D)
Ionic bonds form always form between a metal and a nonmetal, so the answer is D, Magnesium and Bromine.
Sodium is a metal, so a bond between two Sodium atoms will not be ionic.
Fluorine is a non-metal, so a bond between two will be covalent bond instead of an Ionic.
Magnesium and Lithium are both metals, so a bond will not be ionic.
On the other hand, Magnesium is a metal and Bromine is a non-metal, so a bond between them will be ionic.
To see if the original results are reproducible is the answer