A reaction between a proton and $_8{O^{18}}$ that produces $_9{F^{18}}$ must also liberate
$_0{n^1}$
$_1{e^0}$
$_1{n^0}$
$_0{e^1}$
(a)$_8{O^{18}}{ + _1}{H^1}{ \to _9}{F^{18}}{ + _o}{n^1}$
The mass of an $\alpha$-particle is
What is the nucleus of an atom ?
The nuclear radius is given by $R=r_0 A^{1 / 3}$, where $r_0$ is constant and $A$ is the atomic mass number. Then, the nuclear mass density of $U^{238}$ is
Consider the following statements ( $X$ and $Y$ stand for two different elements):
$(I)$ ${ }_{32}^{65} X$ and ${ }_{33}^{65} Y$ are isotopes.
$(II)$ ${ }_{42}^{86} X$ and ${ }_{42}^{85} Y$ are isotopes.
$(III)$ ${ }_{85}^{174} X$ and ${ }_{88}^{177} Y$ have the same number of neutrons.
$(IV)$ ${ }_{92}^{235} X$ and ${ }_{94}^{235} Y$ are isobars.
Which of the above statements are correct?
Nucleus of an atom whose atomic mass is $24$ consists of
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