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Physics
Physics
Problem
Starting from
92
238
U
^{238}_{92}\text{U}
92
238
U
, a series of
n
n
n
α
\alpha
α
–decays and
m
m
m
β
−
\beta^{-}
β
−
–decays produces a nucleus of mass number 222 and atomic number 86. Which pair
(
n
,
m
)
(n,\,m)
(
n
,
m
)
satisfies this transformation? a)
(
5
,
0
)
(5,\,0)
(
5
,
0
)
b)
(
4
,
1
)
(4,\,1)
(
4
,
1
)
c)
(
4
,
2
)
(4,\,2)
(
4
,
2
)
d)
(
3
,
2
)
(3,\,2)
(
3
,
2
)
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