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If the radius of the first Bohr orbit of...

If the radius of the first Bohr orbit of H atom is 0.53 A, the radius of third orbit will be:

A

47A

B

4.77A

C

47.7A

D

477A

Text Solution

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The correct Answer is:
B
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The radius of Bohr's first orbit in H atom is 0.053 nm. The radius of second orbit in He^+ would be:

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  2. If K.E of electron in a Bohr's atom is proportional to e^2/r, its P.E....

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  3. If the radius of the first Bohr orbit of H atom is 0.53 A, the radius ...

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  6. If the frequency of revolution of electron in orbit in H atom is n the...

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  7. The speed of electron in the first Bohr orbit is (c/137). The speed of...

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  8. The ratio of radii of the first three orbits is:

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  9. Total energy of an electron in n^th Bohr's orbit of hydrogen atom En i...

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  12. Ratio of frequencies in two Bohr's orbit of hydrogen atom is 1:27. the...

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  13. Frequency of revolution of an electron in Bohr's orbit of hydrogen ato...

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  14. The difference in angular momentum associated with the electron in the...

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  15. What will be the angular momentum in fourth orbit if L is the angular ...

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  16. The maximum number of photons emitted when electron jumps from an ener...

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  17. The linear speed of an electron in Bohr's orbit is given by:

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  18. According to Bohr's theory, the angular speed (Omega) of electron rela...

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  19. Ratio of centripetal acceleration in 4^th and 6^th Bohr's orbit of hyd...

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  20. The centripetal acceleration of an electron in a Bohr's orbit is propo...

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