The United Nations Charter was drafted in the 20th Century.
Diphosphene is a compound having the formula -LRB- PH -RRB- 2 .. It exists as two geometric isomers , E and Z. Diphosphene is also the parent member of the entire class of diphosphene compounds with the formula -LRB- PR -RRB- 2 , where R is an organyl group .. diphosphene. diphosphenes. organyl. organyl