Question

State following four properties each of α, β and γ radiations:

1. Nature,
2. Charge,
3. Mass and
4. Effect of electric field.

Answer 1

Property	α - particle	β - particle	γ - particle
Nature	Stream of positively charged particles, i.e. helium nuclei	Stream of negatively charged particles, i.e. energetic electrons.	Highly energetic electromagnetic radiation.
Charge	Positive charge (Two times that of a proton) = + 3.2 x 10-19 C (or +2e)	Negative charge = - 1.6 x 10-19 C (or -e)	No charge
Mass	Four times the mass of proton i.e., 6.68 x 10-27 kg	Equal to the mass of electron, i.e. 9.1 x 10-31 kg	No mass (Rest mass is zero)
Effect of electric field	Less deflected	More deflected than alpha particles but in direction opposite to those of α particles	Unaffected