Question

a non - polar bond forms when:
two atoms are dissimilartwo molecules are dissimilartwo atoms are exactly aliketwo molecules interact

Explanation:

Non - polar bonds occur when there is an equal sharing of electrons. This equal sharing happens when two atoms are exactly alike (have the same electronegativity). For example, in \(H_2\) (two hydrogen atoms), the electrons are shared equally between the two identical hydrogen atoms. If two atoms are dissimilar (different electronegativities), there will be an unequal sharing of electrons (polar bond). Molecules interacting is a more general concept and not specific to the formation of a non - polar bond. And the focus is on atoms (the basic units for bond formation in this context) rather than molecules for the formation of a single bond.

Answer:

two atoms are exactly alike