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Thomson's Discovery of Electrons

What is elect...

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What is electron pool Metallic solid Positive kernels and mobile electron

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Q. Metals are lustrous in nature, having shiny appearance. Arrange the reasons given below in a sequence.
(a) Emission of radiation or light energy by excited electrons makes a metal shiny in appearance.
(b) The electrostatic forces of attraction between metal ions and the mobile electrons is called metallic bond.
(c) The positive metal ions are surrounded by pool of electrons.
(d) When light falls on the crystal, electrons get excited.

Q. Assertion :Metals are good conductors of heat and electricity.
Reason: The positive nuclei are surrounded by a "sea" of mobile electrons.

Q. Assertion :Metals conduct electricity. Reason: Electrons are free and mobile in metals.

Q. Metals conduct electricity due to presence of mobile electrons.

Q. Assertion: Molten

N a_{2} S O_{4}

is a good conductor because of mobile electrons.
Reason: Electrons cause conductivity in metals.

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