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Two hydrogen atom collide Collide head on and end up with zero kinetic energy. Each atom then emit a photon of wavelength `121.6 nm`. Which transition leads to the wavelength? How fast were the hydrogen atoms travelling before collision?

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`4.43 xx 10^4 m sec^(-1)`,
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P BAHADUR-ATOMIC STRUCTURE-Exercise 9
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  2. The angular momentum of electron in a Bohr's orbit of H atom is 4....

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  3. Find the quantum number n corresponding to the excited state of He^(o...

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  4. Calculate the angular frequency of an electron occupying the second ...

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  5. Two hydrogen atom collide Collide head on and end up with zero kin...

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  6. The kinetic energy of an electron in H-like atom is 6.04 eV. Find t...

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  7. How many spectral linears are emitted by atomic hydrgen excited to the...

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  8. The hydrogen atom in the ground state is excited by mass of monchromat...

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  9. A single electron orbits around a stationary nucleus of charge + Ze wh...

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  10. Determine de-Broglie wavelength of an electron having kinetic energy o...

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  11. Show that de-Broglie wavelength of electron acceleratated through (V) ...

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  12. Calculate the momentum of electron moving with 1//3 3rd velocity of l...

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  13. Calculate the accelerating potential that must be imparted to a proton...

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  14. An electron in a hydrogen like atom is in an excited state3 . It has a...

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  15. A green ball weighs 75 g and comes travelling towards you at 400 cm ...

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  16. Stationary He^(o+) ion emits a photon corresponding to the first line ...

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  17. 2.4 mole of H2 sample was taken . In one experiment 60% of the sampl...

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  18. what is he maximum precision with which the momentum of an electron ca...

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  19. The photoelectric emission requires a threshold frequency v0 . For a ...

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  20. Point out the anugular momentum of an electron in, (a) 4s orbital (b...

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