The elements whose atomic number is greater than 82 are naturally

The age of fossil when C-14: C-12 in bone is one fourth of ratio in bone of living animal and half-life of C-14 is 5732 years is

The positive charge in an atom was concentrated in a small region called

The radiation emitted from the splits into

The phenomenon by which radiations split matter into negative and positive ions is called

Beta particles are stream of high energy

Radiations present in atmosphere due to different radioactive substances are called

Gamma (γ) radiation are fast moving

In air, alpha particles have range of

Alpha (α) particles are helium (He) nucleus with a charge of

When two light nuclei combine to form a heavier nucleus, the process is said to be

If a C-14 has a half-life of 5730 years, then how long will it take for the number of C-14 in a sample to drop to 1/8 of initial quantity?

In the nuclide defined by &¹⁵&₇X, the number of protons and neutrons respectively are

The elements which emit natural radioactivity are known as