Answer to Question #16547 in Physical Chemistry for bobbi
in the periodictable, the number 92 above the symbol U(uranium) represents what?
The atomic number (also known as the proton number) is the number of protons found in the nucleus of an atom and therefore identical to the charge number of the nucleus. It is conventionally represented by the symbol Z. The atomic number uniquely identifies a chemical element. This means that in the uranium atoms 90 protons.