Atoms
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Atoms
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24 Questions

1. The ionization energy of the electron in thehydrogen atom in its ground state is 13.6 eVThe atomsare excited to higher energy levels to emit radiations of6 wavelengthsMaximum wavelength of emittedradiation corresponds to the transition between [2009]
2. The ground state energy of hydrogen atom is13.6eVWhen its electron is in the first excited state - itsexcitation energy is [2008]
3. In which of the following systems will the radius ofthe first orbit (n = 1) be minimum? [2003]
4. When an electron jumps from the fourth orbit tothe second orbit - one gets the [2000]
5. The spectrum obtained from a sodium vapourlamp is an example of [1995]
6. Energy E of a hydrogen atom with principalquantum number n is given by E= -“ 13.6/n2 eVTheenergy of photon ejected when the electron jumps fromn = 3 state to n = 2 state of hydrogen is approximately[2004]
7. Which of the following transitions in a hydrogenatom emits the photon of highest frequency? [2000]
8. An electron in the hydrogen atom jumps fromexcited state n to the ground stateThe wavelength soemitted illuminates a photosensitive material havingwork function 2.75 eVIf the stopping potential of thephotoelectron is 10 V - the value of n is [2011]
9. Energy E of a hydrogen atom with principalquantum number n is given by E= -“ 13.6/n2 eVTheenergy of photon ejected when the electron jumps fromn = 3 state to n = 2 state of hydrogen is approximately[2004]
10. The ionisation energy of hydrogen atom is 13.6 eV - the ionisation energy of helium atom would be [1988]
11. To explain his theory - Bohr used [1989]
12. The ground state energy of hydrogen atom is13.6eVWhen its electron is in the first excited state - itsexcitation energy is [2008]
13. The total energy of an electron in the first excitedstate of hydrogen atom is about -“3.4 eVIts kineticenergy in this state is [2005]
14. In which of the following systems will the radius ofthe first orbit (n = 1) be minimum? [2003]
15. In a Rutherford scattering experiment when aprojectile of charge Z 1 and mass M1 approaches a targetnucleus of charge Z 2 and mass M2 - the distance of closestapproach is r0The energy of the projectile is [2009]
16. The energy of a hydrogen atom in the ground stateis -“ 13.6 eVThe energy of a He+ ion in the first excitedstate will be [2010]
17. The total energy of electron in the ground state ofhydrogen atom is -“ 13.6 eVThe kinetic energy of anelectron in the first excited state is [2007]
18. The ionisation energy of hydrogen atom is 13.6 eV - the ionisation energy of helium atom would be [1988]
19. The ground state energy of H-atom 13.6 eV The energy needed to ionize H-atom from its second excitedstate[1991]
20. Which of the following transitions in a hydrogenatom emits the photon of highest frequency? [2000]
21. Who indirectly determined the mass of theelectron by measuring the charge of the electron?
22. The total energy of an electron in the first excitedstate of hydrogen atom is about -“3.4 eVIts kineticenergy in this state is [2005]
23. In a Rutherford scattering experiment when aprojectile of charge Z 1 and mass M1 approaches a targetnucleus of charge Z 2 and mass M2 - the distance of closestapproach is r0The energy of the projectile is [2009]
24. When a hydrogen atom is raised from the groundstate to an excited state - [1995]

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