The number of neutrons emitted when ${}_{92}^{235} U$ undergoes controlled nuclear fission to ${}_{54}^{142} Xe$ and ${}_{38}^{90} Sr$ is

Radioactive iodine is used to diagnose the disease of

In the nuclear equation $_{11}Na^{23} + _{1}H^{1} \to _{12}Mg^{23} + x$,what does $x$ represent?

The $_6C^{14}$ in the upper atmosphere is generated by which of the following nuclear reactions?

In the nuclear reaction $_{92}U^{238} \to _{82}Pb^{206} + x\,_{2}He^{4} + y\,_{-1}\beta^{0}$,the values of $x$ and $y$ are respectively......

For the reaction $^{14}N + \alpha \longrightarrow {}^{17}O + p$, $1.16 \ MeV$ (Mass equivalent $= 0.00124 \ amu$) of energy is absorbed. Mass on the reactant side is $18.00567 \ amu$ and proton mass $= 1.00782 \ amu$. The atomic mass of ${}^{17}O$ will be (in $amu$)