During the second half-life, the original material is decayed

The rate of radioactive decay is proportional to

In nuclear fusion, as compared to the masses of original nuclei, the final nucleus is always

Nuclei which do not emit radiations naturally are called

The chemical compounds to explore the metabolism of chemical reactions inside the human body, animals or plants containing some quantity of radioisotopes are called

If a radioactive element has a half-life of 40 minutes. The initial count rate was 1000 per minute, then how long will it take for the count rate to drop to 125 per minutes

A stream of high energy electrons is the

The radiation which primarily consists of protons, electrons, alpha particles, and large nuclei are called

The half-life of Carbon-14 is

What fraction of the original sample will be after 22 years, if the Cobalt-50 is a radioactive element with a half-life of 4.3 years?

In nuclear fission, as compared to the original mass of the heavy nucleus, the total mass of the product is

The matter is built from small particles called

Nuclei bombarded with protons, neutron or alpha particles are changed to

The types of radiations emitted by the radioactive substance are

Most of the nuclei with atomic number 1 to 82 are

A compound containing some amount of radioisotope is

The number of neutrons in the nucleus is called

Radium-226 has a half-life of

The radiations that can ionize the matter are

Technimum-99 has a half-life of 6 hours. If there is 300 mg of it, how much will be left in 48 hours?

The phenomenon in which radiations split matter into ions is called

Nuclei with atomic number 1 to 82 are

During natural radioactivity the unstable nucleus disintegrates to become more

Isotopes have same number of protons but different number of

The number of protons inside nucleus represents

A process in which heavy nucleus splits into two by bombarding a slow-moving neutron is called

In SI base units, 1 Bq is equal to

A helium nucleus comprising of two protons and two neutrons with a charge of 2e is

If the activity of a sample of radioactive bismuth decreases to 1/8 of its original activity in 15 days, then the sample's half-life will be

The fast-moving light photons are