Question

13. Which of the following is closest in mass to a proton?
a) Alpha particle b)Positron
c) Neutron
d)Electron e )Hydrogen molecule​

Answer 1

Neutron since their mass is just different by a very small margin

Answer 2

Answer:

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D)Electron

mass of electron is 9.10938356 × 10-31 kilograms

Nearly it is same with proton