A neutron is a subatomic particle which is a fundamental constituent of matter having mass (1.675X10-27 kg) approximately equal to the hydrogen atom and which is electrically neutral.
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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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