Question

in the periodictable, the number 92 above the symbol U(uranium) represents what?

Answer 1

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.