If a newly discovered element has 1s electrons with a speed that is 60.3 % of the speed of light and possesses a mass that is 30.8 % greater than the mass of a standard electron, what would be the de Broglie wavelength for these electrons in pm? (Hint: The mass of an electron is 9.11 x 10-31 kg)

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Chapter1: Chemical Foundations
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If a newly discovered element has 1s electrons with a speed that is 60.3 % of the speed of light and possesses a mass that is 30.8 % greater than the mass of a standard electron, what would be the de Broglie wavelength for these electrons in pm? (Hint: The mass of an electron is 9.11 x 10-31 kg)

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