- #1
fatma
- 1
- 0
so what i understand is that packing fraction is mass defect per nucleon. mass defect is the difference between total mass of the nucleons and the actual mass of the nucleus of an atom.
if A=mass number
[M][/p]=mass of proton
[M][/n]=mass of neutron
M=mass of nucleus
then packing fraction= [Z[M][/p]+(A-Z)[M][/n]-M]/A
why do some textbooks and websites write it as
packing fraction=(M-A)/A
where M=mass of nucleons
A=mass number
from what i have understood the numerator could not possibly mean mass defect since mass number is not equal to the total mass of nucleons.
where have i not understood well or is the problem with the textbooks and the websites (quite unlilkely i might say)
if A=mass number
[M][/p]=mass of proton
[M][/n]=mass of neutron
M=mass of nucleus
then packing fraction= [Z[M][/p]+(A-Z)[M][/n]-M]/A
why do some textbooks and websites write it as
packing fraction=(M-A)/A
where M=mass of nucleons
A=mass number
from what i have understood the numerator could not possibly mean mass defect since mass number is not equal to the total mass of nucleons.
where have i not understood well or is the problem with the textbooks and the websites (quite unlilkely i might say)