An atom of 135i has a mass of 134.910023 amu. calculate the binding energy in mev per atom. enter your answer with 4 significant figures and no units. use the masses:
mass of 1h atom = 1.007825 amu
mass of a neutron = 1.008665 amu
1 amu = 931.5 me

1132 MeV/atom

Explanation:

Atomic number : It is defined as the number of electrons or number of protons present in a neutral atom.

Also, atomic number of I = 5

3

Thus, the number of protons = 53

Mass number is the number of the entities present in the nucleus which is the equal to the sum of the number of protons and electrons.

Mass number = Number of protons + Number of neutrons

135 =  53 + Number of neutrons

Number of neutrons = 82

Mass of neutron = 1.008665 amu

Mass of proton = 1.007825 amu

Calculated mass = Number of protons*Mass of proton + Number of neutrons*Mass of neutron

Thus,

Calculated mass = (53*1.007825 + 82*1.008665) amu = 136.125255 amu

Mass defect = Δm = |136.125255 - 134.910023| amu = 1.215232 amu

The conversion of amu to MeV is shown below as:-

1 amu = 931.5 MeV

So, Energy = 1.215232*931.5 MeV/atom = 1132 MeV/atom

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answer; 4 electrons;