Mark the correct statement(s).

In the hypothetical fission reaction 

${}_{92}{}^{236}X\to {}_a{}^{144}Y+{}_{36}{}^{b}Z+3{}_0{}^{1}n$

What are the values of $a$ and $b$?

A common example of alpha decay is

${{}^{238}}_{92}\mathrm{U}{{\to }^{234}}_{90}\mathrm{Th}{+}_2{\mathrm{He}}^4+Q$

Given:

${{}^{238}}_{92}\mathrm{U}=238.05060 \mathrm{u}$

${{}^{234}}_{90}\mathrm{Th}=234.04360 \mathrm{u}$

${{}^4}_2\mathrm{He}=4.00260 \mathrm{u}$ and $1\mathrm{u}=931.5\frac{\mathrm{MeV}}{c^2}$

The energy released $\left(Q\right)$ during the alpha decay of ${{}^{238}}_{92}\mathrm{U}$ is _____ $\mathrm{MeV}$.

The minimum kinetic energy needed by an alpha particle to cause the nuclear reaction ${}_7{}^{16}\mathrm{N}+{}_2{}^4\mathrm{He}\to {}_1{}^1\mathrm{H}+{}_8{}^{19}\mathrm{O}$ in a laboratory frame is $n$ (in $\mathrm{MeV}$). Assume that ${}_7{}^{16}\mathrm{N}$ is at rest in the laboratory frame. The masses of ${}_7{}^{16}\mathrm{N}, {}_2{}^4\mathrm{He}, {}_1{}^1\mathrm{H}$ and ${}_8{}^{19}\mathrm{O}$ can be taken to be $16.006 \mathrm{u}, 4.003 \mathrm{u}$, $1.008 \mathrm{u}$ and $19.003 \mathrm{u}$, respectively, where $1 \mathrm{u}=930 \mathrm{MeV} {\mathrm{c}}^{-2}$. The value of $n$ is

If the numerical value has more than two decimal places, truncate/round-off the value to TWO decimal places.

Consider the following nuclear reactions:

I. ${}_7{}^{14} \mathrm{N}+{}_2{}^4\mathrm{He}⟶{}_8{}^{17}\mathrm{O}+X$

II. ${}_4{}^9\mathrm{Be}+{}_2{}^4\mathrm{H}⟶{}_6{}^{12}\mathrm{He}+Y$

Then,