Nuclear Chemistry Questions

Hydrogen bomb is based on the principle of:

The photon of hard gamma radiation knocks a proton out of ${}_{12}^{24}\text{Mg}$ nucleus to form:

In the transformation of ${}_{92}^{238}\text{U}$ to ${}_{92}^{234}\text{U}$, if one emission is an $\alpha$ -particle, what should be the other emission(s)?

A radioactive element gets spilled over the floor of a room. Its half-life period is $30\text{days}$. If the initial activity is ten times the permissible value, after how many days will it be safe to enter the room?

Which of the following nuclear reactions will generate an isotope?

Consider the following nuclear reactions:${}_{92}^{238}\text{M}\to {}_y^x\text{N}{+}_2^4\text{He}$${}_y^x\text{N}\to {}_B^A\text{L}+2{\beta }^{+}$ The number of neutrons in the element $\text{L}$ is:

The half – life of a radioisotope is four hours. If the initial mass of the isotope was $200\text{g}$, the mass remaining after $24$ hours undecayed is: