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Using the atomic masses (in u): , ,
PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei
Problem
Using the atomic masses (in u):
3
7
Li
=
7.016004
^{7}_{3}\text{Li}=7.016004
3
7
Li
=
7.016004
,
0
1
n
=
1.008665
^{1}_{0}\text{n}=1.008665
0
1
n
=
1.008665
,
2
4
He
=
4.002603
^{4}_{2}\text{He}=4.002603
2
4
He
=
4.002603
, find the Q-value (in MeV) for the reaction
3
7
Li
+
0
1
n
→
2
4
He
+
2
4
He
^{7}_{3}\text{Li}+^{1}_{0}\text{n}\;\rightarrow\;^{4}_{2}\text{He}+^{4}_{2}\text{He}
3
7
Li
+
0
1
n
→
2
4
He
+
2
4
He
. (a)
−
18.1
MeV
-18.1\,\text{MeV}
−
18.1
MeV
(b)
+
18.6
MeV
+18.6\,\text{MeV}
+
18.6
MeV
(c)
+
18.1
MeV
+18.1\,\text{MeV}
+
18.1
MeV
(d)
+
17.0
MeV
+17.0\,\text{MeV}
+
17.0
MeV
Related theory
Radioactivity
Mass-Energy Equivalence
Mass defect and binding energy
Nuclear physics
Mass-energy relation
Nuclei
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