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Byju's Answer
Standard XII
Physics
Alpha Decay
Find the bind...
Question
Find the binding energy per nucleon for lithium nucleus
3
L
i
7
.
Take mass of
3
L
i
7
=
7
u
, mass of proton
=
1.007825
u
and mass of neutron
=
1.008665
u
.
Take
1
u
=
931.5
M
e
V
.
A
3.7
M
e
V
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B
4.9
M
e
V
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C
1.7
M
e
V
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D
7.736
M
e
V
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Solution
The correct option is
D
7.736
M
e
V
Binding energy per nucleon.
E
=
△
E
A
=
△
m
∗
931
A
△
m
=
(
3
M
p
+
4
M
n
)
−
Mass of
3
L
i
7
Where,
M
p
is the mass of the proton
M
n
is the mass of the neutron
△
m
=
(
3
X
1.007825
+
4
X
1.008898
)
−
7
=
0.059067
△
E
=
0.059067
X
931
=
54.991377
E
=
△
E
A
=
54.991377
7
=
7.736
M
e
V
Suggest Corrections
0
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Q.
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If the mass of
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