Electron is a subatomic particle having a unit negative charge (-1.602 x 10-19coulombs) and a mass (9.11 x 10-31 kg) which is 1/1837 of that of a hydrogen atom.
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3.
What is a proton?
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4.
Who discovered neutron?
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5.What is a neutron?
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6.
What is the name of the remaining part of atom except outer orbit?
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7.
Name the particles which determine the mass of an element.
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8.
What are α-particles?
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9.Why were neutrons discovered very late?
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10.
What are the fundamental particles present in a neutral atom having atomic number greater than 1?
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