Question

A radioactive element decays by emitting one $\alpha$ and 2$\beta$ - particles. The daughter element formed is an isotope of the parent element.

• A. True
• B. False

Answer 1

The correct option is A True

As we know,

mass charge

$\alpha$ 4 +2

$\beta$ 0 -1

So final atomic no of daughter element $=a-2+2(-1)=a$

mass $=M-4$

So the daughter element formed is an isotope of the parent element.