Answer :
The following statement is not true is : a positron is the antiparticle of a proton .
The statement that are true is given below :
- beta decay occurs when a neutron changes into a proton while emitting an electron.
- positrons are similar in ionizing power and penetrating power to beta particles .
- an alpha particle is a He²⁺ ion
The positron also called as antielectron is the antiparticle of an electron. the electric charge of positron is +1 e.
Thus, the statement which is not true is a positron is the antiparticle of a proton because a positron is the antiparticle of the electron.
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