Comparison of Ionising power of α, β,γ Heavier particle has high ionising power.
a → 10,000 times of α and 100 times of β
P → 100 times of α
∴ Maximum ionising power a, minimum ionising power γ.
Comparison of Penetrating power of α, β and γ
Light particle has maximum speed hence maximum penetrating power.
α has very large penetrating power up to a few hundred meter in air.
α has small penetrating power (being very heavy) 3 to 8 cm in air
β- has large penerating power up to few meter in air α < β < γ.
