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The ratio of the radii of the first thre...

The ratio of the radii of the first three orbits in an atom of hydrogen is

A

`1:4:9`

B

`9:4:1`

C

`1:2:3`

D

`3:2:1`

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The correct Answer is:
A
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AAKASH SERIES-ATOMIC STRUCTURE-Level - I (MAIN) (Exercise - II (Bohr.s theory))
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  2. The ratio of wavelength values of series limit liens (n(2) = oo) of Ba...

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  3. The total energy of electron in an atom is a combination of potential ...

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  4. The radius of which of the following orbit is same

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  5. When an electron with charge .e. and mass .m. moves with velocity .v. ...

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  6. The change in velocity when electron jumps from the first orbit to the...

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  7. Which one of the following statements is not correct ?

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  8. As an electron is brought from an infinite distance close to nucleus o...

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  9. The ratio of the radii of the first three orbits in an atom of hydroge...

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  10. The radius of hydrogen atom in the ground state is 0.53 Å, the radius ...

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  11. In hydrogen atom the kinetic energy of electrons in 3.4 eV. The distan...

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  12. The radius of first Bohr.s orbit for hydrogen is 0.53 Å. The radius o...

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  13. The energy of second Bohr orbit of hydrogen atom is -328 kJ. mol^(-1),...

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  14. Which of the following transistions in hydrogen atom will require the ...

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  15. The energy of an electron in the first Bohr's orbit of a hydrogen atom...

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  16. The speed of an electron in the inner most orbit of the hydrogen (Bohr...

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  17. The energy of an electron present in Bohr's second orbit of hydrogen a...

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  18. The wave length having wave number 4000 cm^(-1) is

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  19. The energy of an electromagnetic radiation is 19.875 xx 10^(-13)erg. W...

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