Question

In a radioactive decay, an emitted electron comes from

(a) outermost orbit of the atom

(b) orbit having principal quantum number one

(c) nucleus of the atom

(d) inner orbital of the atom

Answer 1

Correct option(c) nucleus of the atom

Explanation :

Since radioactivity is a nuclear phenomenon, therefore electron comes from nucleus of the atom. During this process, a neutron breaks down into a proton and an electron.