Which is not true of alpha radiation? O A. It increases the number of protons. O B. It has a positive charge. O C. It causes transmutation. O D. It is heaviest of the three types

A

Explanation:It is relatively massive

Its direction of deflection shows it possitively charged

It brings one element into another by bombardment (transmutation)

A. It increases the number of protons

Explanation:

When alpha radiation is emitted by a particle, its number of protons decrease by two, that is, the particle lost two protons.

Option B is true because alpha particle is composed by 2 protons and 2 neutrons.

Option C is true because a change in the structure of atomic nuclei of the parent particle is produced.

Option D is correct because alpha radiation is heavier than beta and gamma radiations.