atomic weight - protons = neutrons,
Na-23 has an atomic weight of 23 amu, and 11 protons so 23-11=12 neutrons
Justus Rau
23.2=
23 000.
23
23
23
Two: 1 and 23
23
23 of them.
There are 2 tens in 23
92 divided by 4 is 23.
How many people have the birthday of March 23 in the world?
23 ! ! ! !