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Physics
Physics
Problem
Identify the correct expression for the mass defect
Δ
m
\Delta m
Δ
m
of a nucleus that contains
Z
Z
Z
protons,
N
N
N
neutrons and has rest mass
m
nucleus
m_{\text{nucleus}}
m
nucleus
. a)
Δ
m
=
(
Z
+
N
)
m
n
−
m
nucleus
\Delta m = (Z+N)m_n - m_{\text{nucleus}}
Δ
m
=
(
Z
+
N
)
m
n
−
m
nucleus
b)
Δ
m
=
N
m
p
+
Z
m
n
−
m
nucleus
\Delta m = Nm_p + Zm_n - m_{\text{nucleus}}
Δ
m
=
N
m
p
+
Z
m
n
−
m
nucleus
c)
Δ
m
=
Z
m
p
+
N
m
n
−
m
nucleus
\Delta m = Zm_p + Nm_n - m_{\text{nucleus}}
Δ
m
=
Z
m
p
+
N
m
n
−
m
nucleus
d)
Δ
m
=
m
nucleus
−
Z
m
p
−
N
m
n
\Delta m = m_{\text{nucleus}} - Zm_p - Nm_n
Δ
m
=
m
nucleus
−
Z
m
p
−
N
m
n
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