Answer:
Some atoms do not have a proton.
Protons have about same mass as electrons.
Protons have the magnitude of charge as neutrons, but are opposite in sign.
Step-by-step explanation:
Protons are the positive charge particles which are present inside the nucleus and has a mass equal to neutron.
an atom has equal number of electrons and protons hence it is not possible that atom is found in a state where is does not have any proton.
The mass of proton is equal to that of neutron but not electron. Protons are heavier than that of electrons.
Protons are the positively charged particles whereas neutrons do not have any charge present in it.
Hence the selected three options about protons are false.