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प्रश्न
Give the charge and the mass of an electron, proton and neutron present in an atom ?
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उत्तर
| Particle | Charges | Mass |
| (1) proton | Positive | One atomic mass unit. (amu) |
| (2)electron | Negative | 1/1837 times the mass of one hydrogen atom. |
| (3)Neutron | No charge | One atomic mass unit, equal to mass of proton. |
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| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
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