Natri
A: 23 : atomic weight
A: 23 atomic mass / you know 23 gram has 6,02.1023 atoms
N = A - Z ....Neutron
Z: 11 - atomic number
p proton = e electron = Z
Natri
A: 23 : atomic weight
A: 23 atomic mass / you know 23 gram has 6,02.1023 atoms
N = A - Z ....Neutron
Z: 11 - atomic number
p proton = e electron = Z .
Avogadro 's mumber , avogadro constant : 6,02. 1023 the particles
1 mol is 6,02. 1023 ( the particles)