is radioactive and used for carbon dating. atomic carbon is short-lived but it is stabilised by allotropic forms. carbon has three allotropes namely diamond, graphite and amorphous form. the properties of these allotropes are different due to the different arrangements of c atoms inside them....
About ten artificial radioactive isotopes of potassium are known also. A radioactive isotope is one that breaks apart and gives off some form of radiation. Artificially radioactive isotopes are produced when very small particles are fired at atoms. These particles stick in the atoms and make them...