Arrange the α, β and γ radiations in ascending order of their (i) ionizing power, and (ii) penetrating power.
Arrange the α, β and γ radiations in ascending order of their (i) ionizing power, and (ii) penetrating power.

Solution:

(i) Gamma radiation has the least ionising power, beta radiation has 100 times the ionising strength of gamma radiation, and alpha radiation has 1000 times the ionising power of gamma radiation.

As a result, their ionising power is listed in ascending order.

=> γ < β < α

(ii) The alpha particle has the least penetrating power, whereas the beta particle has a large penetrating power and the gamma particle has a very great penetrating power.

As a result, the ascending order of penetrating power is as follows:

=> α < β < γ