Question

During β-emission an electron is ejected from the atom of radioactive substance. The electron is ejected from:

पर्याय

• the outermost orbit of atom

• the innermost orbit of atom

• the nucleus of the atom

• none of these

Answer 1

The nucleus of the atom.

Explanation:

During β-emission, a neutron in the nucleus breaks into a proton and an electron, and the electron is ejected from the nucleus. The electron is not ejected from the orbits of the atom.