It is present as a powder, and is the main constituent of substances such as charcoal, lampblack (soot) and activated carbon.. 
Ràdon jẹ́ ìpilẹ̀ṣẹ̀ elegbogi pẹ̀lú àmì-ìdámọ̀ rn àti nọ́ḿbà mùmù 86.Dra) àwọn aláṣe kẹ́míkà.. 