questionedithistorytranslationsCurrent version This is the accepted version. added by Ts Dec. 16, 2017, 11:44 a.m. What is the atomic number of a chemical element? The number of neutrons in the atom's nucleusThe number of atomsThe number of protons in the atomic nucleusThe number of electrons in the atomic nucleusThe atomic number or proton number of a chemical element is the number of protons found in the nucleus of an atom. It is identical to the charge number of the nucleus. The atomic number uniquely identifies a chemical element. TsShare and bring new players to the game!0Very uninterestingToo difficultPoorly writtenIncorrect or questionableCorrect this questionwikipedia → Atomic number1Very interesting! wikipedia → Atomic numberreach: rather globalchemistryVotes +1 Very interesting! Ninjai Acceptable olorion Acceptable misanthrope