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प्रश्न
Compare an electron, a proton and a neutron in respect of their relative masses and charges.
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उत्तर
Relative masses :relative mass of a neutron is 1u, that of a proton is also 1u and that of an electron is (1/1840) u.
Charge: Charge of a proton is +1, that of an electron is –1 and that of a neutron is zero.
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संबंधित प्रश्न
Define the term Atomic number.
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Gases become good conductors of electricity under ........ (low/high) pressure and .............. (low/high) voltage electrical discharge.
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In an atom, the last shell containing electrons is called its..................shell.
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The γ-rays are............................ radiations, like light.
Tick the most appropriate answer
β-particles are actually a stream of
- protons
- electrons
- neutrons
- none of these
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What is an atom?
ANSWER IN DETAIL
Name the three subatomic particles. How are they different from each other ?
Define the term Mass number.
Draw a neat labelled diagram representing an atom. Name the three sub-atomic particles in the atom and represent them symbolically showing the mass and charge of each. State where the sub-atomic particles are present in the atom.
State how electrons are distributed in an atom. Explain in brief the rules which govern their distribution.
