mass defect and binding energy
TRANSCRIPT
C G H D D F Q H Q DS G H E D M W O T AD S C A S H I D Y AD A Y D R R R F Z EY L X R B A T I R FC P L E J M Y S T VR H T K N O I S U FR A L V R L F I S GP C X D W A Q O A AC W E R R Y M N D L
Question 1
Unstable nuclei undergo this
process to become stable.
Question 2
It is a kind of decay where 2 smaller
nuclei come together to form a more
massive nucleus.
Question 3
It is a kind of decay where 1 massive nucleus, separate
when bombarded by a neutron.
Question 4
It is a kind decay where the atomic
mass of the daughter nuclei decreases by 2.
Question 5
It is a kind of decay where the atomic mass of daughter
nuclei increases by 1.
Keep this in
1 atomic mass unit
= 1µ= 931 MeV
mp = 1.0073µ
mn = 1.0087µ
Alpha Decay of Uranium
U92232 → Th90
228 + He24
reactant
product
Mass reactant= 232.0371
46amu
Mass product= 228.028731 +
4.002603= 232.031334
amu
STEP 1:
Difference between mass of reactant and mass of
products
STEP 2:
∆M= mass of reactant − mass of products - 232.031334 amu
∆M=0.005812 amuMass defect
Convert mass defect into energy
STEP 3:
E= m ass defect ( c2 )E= 0.005812 amu (931 MeV / amu )
E=5.4 MeVBinding Energy
Fission of Uranium
n01 + U92
235 → Ba56138 + Kr36
95 + 3 n01
reactants
products
Mass reactant= 235.0439 amu + 1.0087 amu = 236.0526
amu
Mass product= 137.905 + 94.900 +
3.026= 235.831 amu
STEP 1:
Difference between mass of reactants and mass of
products
STEP 2:
∆M= mass of reactants − mass of products
236.0526 amu - 235.831 amu
∆M= 0.222 amuMass defect
Convert mass defect into energy
STEP 3:
E= m ass defect ( c2 )E=0.222 amu (931 MeV / amu )
E=206 MeVBinding Energy
Mass defect- is the difference between the mass of the product and reactant when reaction takes place.
Binding energy is the mass defect in terms of energy.
Binding Energy: Compared
Alpha decay 5.4 MeV
Fission206 MeV
“Where does the missing mass go in a
fission reaction? What is the
application of mass defect and Binding
Energy?”
ASSIGNMENTSearch for Bataan Nuclear
Power plant and explain why the Philippine Government
does not operate it. *Write your explanation on a
½ CW.