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Chemistry
Chemistry
Problem
A radioactive nuclide
X
X
X
emits a positron and transforms into
8
18
O
^{18}_{8}\mathrm{O}
8
18
O
. Which of the following is
X
X
X
? a)
7
18
N
^{18}_{7}\mathrm{N}
7
18
N
b)
8
18
O
^{18}_{8}\mathrm{O}
8
18
O
c)
9
18
F
^{18}_{9}\mathrm{F}
9
18
F
d)
8
17
O
^{17}_{8}\mathrm{O}
8
17
O
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