Which two particles each have a mass approximately equal to one atomic mass

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?

answer:

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