Which is false about an electron? (1) Rest mass of an electron is \( 9.1 \times 10^{-28} \mathrm...

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Which is false about an electron?
(1) Rest mass of an electron is \( 9.1 \times 10^{-28} \mathrm{~g} \)
(2) Mass of the electron decreases with the increase in velocity
(3) Molar mass of an electron is \( 5.48 \times 10^{-4} \mathrm{~g} / \mathrm{mole} \)
(4) \( \mathrm{e} / \mathrm{m} \) of electron is \( 1.7 \times 10^{8} \) coulomb/g
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