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13.Nuclei
easy
The nuclei of which one of the following pairs of nuclei are isotones
A
$_{34}S{e^{74}},\,{\,_{31}}C{a^{71}}$
B
$_{42}M{o^{92}},\,{\,_{40}}Z{r^{92}}$
C
$_{38}S{r^{81}},\,{\,_{38}}S{r^{86}}$
D
$_{20}C{a^{40}},\,{\,_{16}}{S^{32}}$
(AIPMT-2005)
Solution
(a) These nuclei having different $Z$ and $A$ but equal $(A -Z)$ are called isotones.
Standard 12
Physics
