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Electron-volt is the unit of energy $(1 e V = 1.6 \times 10^{- 19} J) .$ In H-atom, the binding energy of electron in first orbit is 13.6 eV. The same in joule (J) is

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10×10-19 J

21.76×10-19 J

13.6×10-19 J

None of these

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detailed solution

Correct option is B

Given, 1 eV=1.6×10-19 J∴ 13.6 eV=13.6×1.6×10-19 J21.76×10-19 J

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Electron-volt is the unit of energy 1 eV=1.6×10-19 J. In H-atom, the binding energy of electron in first orbit is 13.6 eV. The same in joule (J) is

Remember concepts with our Masterclasses.

Ready to Test Your Skills?

free study material

Electron-volt is the unit of energy $(1 e V = 1.6 \times 10^{- 19} J) .$ In H-atom, the binding energy of electron in first orbit is 13.6 eV. The same in joule (J) is