Answer:
8.46
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 = 549
Thus, the number of protons = 49
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
105 = 49 + Number of neutrons
Number of neutrons = 56
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 = (49*1.007825 + 56*1.008665) amu = 105.868665 amu
Mass defect = Δm = |105.868665 - 104.914558| amu = 0.954107 amu
The conversion of amu to MeV is shown below as:-
1 amu = 931.5 MeV
<u>So, Energy = 0.954107*931.5 MeV/atom = 888.750671 MeV/atom</u>
Also, 1 atom has 105 nucleons (Protons+neutrons)
<u>So, Energy = 888.750671 MeV/105nucleons = 8.46 MeV/nucleon</u>
<u>Answer:- 8.46</u>
