Which material absorbs the most solar radiation

Consequently 22.5 percent of incoming solar radiation goes directly to the surface of the Earth and is absorbed. A planet and it's atmosphere, in our solar system, can radiate back to space only as much energy as it absorbs from incoming solar radiation.

Credit:Columbia University

☆ionisation energy increases across a period from na -> ar☆ionisation energy decreases down a group from li -> fr☆ionic radius decreases across a period from na -> cl☆ionic radius increases down a groupfrom f -> ii hope it clarifies your doubts