Q.

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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a

Only (i) and (ii) are correct

b

Only (iii) and (i) are correct

c

All the statements are correct

d

Only (ii) and (iii) are correct

answer is C.

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Detailed Solution

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

L=nh2π

K=12mv2Z2n2

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