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Which of the following statements are co...

Which of the following statements are correct ?
(i) All isotopes are radioactive
(ii) Emission of `beta`-rays is accompanied by the emission of anti neutrinos
(iii) Alpha particles have a mass number of 4 and carry a charge of `+2`
(iv) `gamma` -rays have a higher penetrating power than `alpha` -rays

A

I, ii and iii

B

ii, iii and iv

C

iii and iv

D

ii and iv

Text Solution

Verified by Experts

The correct Answer is:
B
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