Thread:Doritodorito/@comment-33431934-20200206012805/@comment-33431934-20200206041455

TSRITW wrote: Because isotopes, I think? No, because Allotropes.

Difference between isotopes and allotropes:

Protium, Deuterium, and Tritium are ISOTOPES of hydrogen.

Coal, Graphite, and Diamond are ALLOTROPES of carbon.