Atomic number of a nucleus is $Z$ and atomic mass is $M.$ The number of neutron is
$M - Z$
$M$
$Z$
$M + Z$
(a) $N = M – Z = $ Total no. of nucleons -no. of protons.
Assertion : The binding energy per nucleon, for nuclei with atomic mass number $A > 100$, decreases with $A$.
Reason : The nuclear forces are weak for heavier nuclei.
A chain reaction is continuous due to
The ratio of the density of oxygen nucleus $\left({ }_8^{16} O \right)$ and helium nucleus $\left({ }_2^4 He \right)$ is
Isotopes are atoms having
If the nucleus ${}_{13}^{27}Al$ has a nuclear radius of about $3.6\,\, fm,$ then ${ }_{32}^{125} Te$ would have its radius approximately as …….$fm$
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