Which of the following radioactive emissions is the least penetrating, aloha particles , beta particles or gamma rays

The least penetrating of the given radioactive emissions will be alpha particles.

Explanation:

There are 3 radioactive particles which are emitted during radioactive processes:

1. Alpha particles: These particles are emitted when a nuclei undergoes alpha decay process. These particles have low energy associated with them.

2. Beta particles: These particles are emitted when a nuclei undergoes beta decay process. These particles have higher energy than alpha particles.

3. Gamma radiations: These radiations are emitted when an unstable nuclei undergoes gamma ray emission process and gives an excess energy through a spontaneous electromagnetic process. These radiations have the highest energy of all the radioactive particles.

Penetrating power of the particles is directly proportional to the energy of the particles, therefore:

More the energy of the particles, more will be the penetrating power and vice-versa.

Increasing order of penetrating power will be:

Hence, alpha particles is the least penetrating among the following radioactive particles.

answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error