Which pair of groups will have larger ionic radii compared to their atomic radii after gaining electrons? a chalcogens and alkaline earth metals b halogens and alkali metals c alkali and alkaline earth metals d transition and inner-transition metals e chalcogens and halogens

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

they are made of gases.

they have a spherical shape.

they make energy through fusion.