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Which one of the following is considered...

Which one of the following is considered as the main postulate of Bohr's model of atom.

A

Protons are present in the nucleus

B

Electrons are revolving around the nucleus

C

Centrifugal force produced due to the revolving electrons balances the force of attraction between the electron and the protons.

D

Angular momentum of electron is an integral multiple of `(h)/(2 pi)`.

Text Solution

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The correct Answer is:
D
(d) The electron can move only in these circular orbits where the angular momentum is a whole number multiple of `(h)/(2 pi)` or it is quantised.
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A2Z-ATOMIC STRUCTURE-Bohr'S Model
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  2. The ratio of the velocity of light and the velocity of electron in the...

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  3. The wavelength associated with an electron moving with a velocity of 1...

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  4. The energy of electron in first Bohr's orbit of H-"atom" is - 13.6 eV ...

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  5. Ionisation energy of He^+ is 19.6 xx 10^-18 J "atom"^(-1). The energy ...

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  6. The energy of second orbit of hydrogen is equal to the energy of ,

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  7. If first ionisation energy of hydrogen be E, then the ionisation energ...

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  8. The ratio of (E2 - E1) "to" (E4 - E3) for the hydrogen atom is approxi...

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  9. With increasing member, the energy difference between adjacent levels ...

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  10. Which one of the following is considered as the main postulate of Bohr...

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  11. The energy of second Bohr orbit of the hydrogen atom is - 328 k J mol^...

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  12. The ratio of the energy of the electron in ground state of hydrogen to...

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  13. The ratio of the radii of three Bohr orbit is

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  14. Energy of third orbit of Bohr's atom is.

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  15. If the radius of first Bohr orbit be a0, then the radius of the third ...

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  16. In H-atom electron jumps from 3^(rd) to 2^(nd) energy level, the energ...

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  17. The ratio of ionization energy of H and Be^(+3) is.

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  18. One energy difference between the states n = 2 and n= 3 is EeV, in hyd...

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  19. If first ionisation potential of a hypothetical atom is 16 V, then the...

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  20. Correct order of radius of the first orbit of H, He^+, Li^(2 +), Be^(3...

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