Physics
A mixture of radio active substance gives off three types of radiations.
I. Name the radiation which travels with the speed of light.
II. Name the radiation which has the highest ionising power.
III. Name the radiation which is negatively charged.
(b) When an alpha particle gains two elections, it becomes neutral and an atom of an element which is a rare gas. Name this rare gas.
Radioactivity
Answer
(a) I. The radiation which travels with the speed of light is γ radiation.
II. The radiation which has the highest ionizing power is α radiations.
III. The radiation which is negatively charged is β radiations.
(b) Helium [2He4]
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