Neutron is a fundamental particle carrying [CPMT 1990] (a) A charge of +1 unit and a mass of 1 unit (b) No charge and a mass of 1 unit (c) No charge and no mass (d) A charg of –1 and a mass of 1 unit
Correct option is B) Proton and e ⊖ which are electrically charged, neutrons have no charge they are electrically neutral. The mass of a neutron is slightly greater than the mass of a proton, which is 1 atomic mass unit (amu). (An atomic mass unit equals about 1.67×10−27 kilograms.) Option (B) is correct.
