Chemical element whole number. For example, the relative atomic mass of chlorine is 35.453 u, which differs greatly from a whole number as it is an average of about 76% chlorine-35 and 24% chlorine-37. Whenever a relative atomic mass value differs by more than 1% from a whole number, it is due to this averaging effect, as significant amounts of more than one isotope are naturally present in a sample of that element. Chemists and nuclear scientists have different definitions of a "pure element". In chemistry, a pure element means a substance whose atoms all (or in practice almost all) have the
The Fifth Element humanoid woman who takes the name Leeloo. Terrified of the unfamiliar surroundings, she breaks out of confinement and jumps off a high ledge, crashing into the flying taxicab of Korben Dallas, a former major in the special forces. Dallas delivers Leeloo to Cornelius and his apprentice, David, and it is revealed that she is the Fifth Element. Cornelius learns from her that the element stones were not on the Mondoshawans' ship, but had been entrusted to an alien opera singer, the diva Plavalaguna. Zorg kills many of the Mangalores for their failure to obtain the stones, but the survivors determine