Although thermodynamically prone to oxidation, carbon resists oxidation more effectively than elements such as iron and copper that are weaker reducing agents at room temperature.Carbon compounds form the basis of all known life on Earth, and the carbon-nitrogen cycle provides some of the energy produced by the Sun and other stars.. 
Polonium (, ) jẹ́ ìpilẹ̀sẹ kẹ́míkà pẹ̀lú àmì-ìdámọ pọ̀ àti nọmba átọ́mù 84, tí Marie skrhon-E-E àti Pierre VE ṣe àwárí ní 1898.ìtumọ̀ àwọn àsé kẹ́míkà.. 