In nuclear reactors,the speed of the neutrons is slowed down by:

The end product of the $(4n + 2)$ radioactive disintegration series is:

Which of the following nuclides has the magic number of both protons and neutrons?

Which among the following minerals contains a radioactive element?

The highest binding energy per nucleon will be for

Statement $1$: The nuclide $_{13}^{30}Al$ is less stable than $_{20}^{40}Ca$. Statement $2$: Nuclides containing an odd number of neutrons are generally unstable.