Respuesta :
Answer:
The sum of the protons and neutrons
Explanation:
mass number= proton number + neutron number
Answer:
Atomic Number Symbol Atomic Weight
10 Ne 20.179
11 Na 22.98977
12 Mg 24.30
13 Al 26.98154
Answer:
The sum of the protons and neutrons
Explanation:
mass number= proton number + neutron number
Answer:
Atomic Number Symbol Atomic Weight
10 Ne 20.179
11 Na 22.98977
12 Mg 24.30
13 Al 26.98154