Gases mix with gases easily to form homogeneous mixtures. liquids do not always mix together and form homogeneous mixtures. this is because gases have large a) particles b) molecular masses c) spaces between molecules d) attractions for other molecules

C/gases have the large space space between molecules

Explanation:

Gases can make homogenous mixtures with them selves more than liquids because the space between the molecules of gases is larger than the space between the molecules of the liquid.

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.