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Name the first scientists to propose abo...

Name the first scientists to propose about atom in 5th century BC?

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CHETANA PUBLICATION-Structure of atoms and nuclei-EXERCISE
  1. Name the first scientists to propose about atom in 5th century BC?

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  2. The radius of 3rd Bohr's orbit in hydrogen atom is 4.782 xx 10^-10 m C...

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  3. Find the ratio of the diameters of 1st Bohr orbit to 3rd Bohr orbit.

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  4. Calculate the linear velocity and angular momentum of an electron in t...

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  5. Angular speed of the electron in the 1st Bohr orbit is 4.08 xx10^16 ra...

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  6. Find the period of revolution of electron in the second orbit in the h...

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  7. The angular momentum of the electron in the second Bohr orbit is 2.112...

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  8. Find the energy of the electron in eV in the third Bohr orbit of the h...

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  9. Energy of an electron in the first Bohr orbit is -13.6eV. Hence calcul...

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  10. What is rolling kinetic energy ?

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  11. Calculate the difference in energies of two levels between which a tra...

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  12. An electron in the ground state jumps to 4th state by absorption of en...

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  13. Calculate the wavelength of a microwave of frequency 8 GHz

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  14. The Ha line of the Balmer series of hydrogen spectrumhasa wavelength 6...

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  15. Calculate the energy radiated by the electron in the hydrogen atom dur...

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  16. Find the series limit of Paschen series R = 1.097 xx 10^7 m^1.

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  17. Find the ratio of the longest wavelength to the shortest wavelength in...

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  18. If the shortest wavelength in Paschen series is 8203 A^@, find the lon...

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  19. John Dalton's model of atom was

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  20. Bohr's theory applicable to

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  21. If the radius of 1st Bohr orbit in hydrogen atom is 0.5 A^@ 'then radi...

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