Question

A radioactive source emits three types of radiations. Name the radiation which has the lowest ionizing power.

• A. $alpha$
• B. $beta$
• C. $gamma$
• D. None of the above

Answer 1

The correct option is C $gamma$

The lowest ionizing power of the three is of gamma radiation which carries no electric charge and has virtually no mass, so not much of a 'punch' when colliding with an atom.