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Check the correctness of the following statements about Bohr model of hydrogen atom
i) The acceleration of the electron for n = 2 orbit is more than that in n = 1 orbit
ii) The angular momentum of the electron in n = 2 orbit is more than that in n = 1 orbit
iii) The K.E. of the electron in n = 2 orbit is less than that in n = 1 orbit.

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Only (i) and (ii) are correct

Only (iii) and (i) are correct

All the statements are correct

Only (ii) and (iii) are correct

answer is C.

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Detailed Solution

The centripetal acceleration depends on the electrostatic force between electron and nucleus. For higher orbits, radius increases, thus force and acceleration both decreases.

$L = \frac{n h}{2 π}$

$K = \frac{1}{2} m v^{2} \propto \frac{Z^{2}}{n^{2}}$

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