Question

which atoms form an ionic bond?
a. magnesium and lithium
b. magnesium and bromine
c. two fluorine atoms
d. two sodium atoms

Explanation:

Ionic bonds form between a metal and a non - metal. Magnesium is a metal and bromine is a non - metal. In option A, both magnesium and lithium are metals. In option C, two fluorine atoms will form a covalent bond as they are both non - metals. In option D, two sodium atoms will not form an ionic bond as they are both metals.

Answer:

B. Magnesium and bromine