92 atoms have been identified, i think(:
4000
Thus far (2012) there have been 118 unique elements identified, the most recent being Ununoctium, discovered in 2003. >> Ununoctium: symbol Uuo, at. no. 118, at. wt. 294 ... it's man made and Radioactive.
Scientists have identified 118 elements, each made up of unique atoms with different numbers of protons in their nucleus. These elements combine in various ways to form all the matter in the universe.
2
their are about 100
4,500
i do not know
4,000
About 3 Millions.
four
Atoms are normally identified according to the element of which that atom is an example. And that, in turn, is determined by the number of protons in the atom's nucleus. So, any atom that has just one proton is a hydrogen atom. If it has two protons it is a helium atom. And so forth.
the population is 1005,but about 19 have been named and identified