Question

A nucleus A ZX emits an alpha particle followed.by ϒemission; thereafter it emits two β particles to form X3.

(a) Copy and complete the values of A and Z for X3 :

(b) Out of alpha (α), beta (β ) and gamma (ϒ) radiations –

• Which radiation is the most penetrating?
• Which radiations are negatively charged ?

Answer 1

∴ X3 has mass no A-4

Atomic no. Z i.e, it is an isotope of X

(b)

1. Most penetrating radiation isϒ.

2. β radiations are negatively charged.