Ch-5 Atomic Structure Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "Ch-5 Atomic Structure" Click on "Start Quiz" To Continue... 1. An orbital can accommodate maximum electrons: 10 14 6 2 None 2. Lyman Series is obtained when electron in an atom jumps from higher energy level to: Ground level 2nd level 3rd level 4th level None 3. When 6d orbital is complete, the entering electron goes into: 7f 7s 7p 7d None 4. Lyman series occur in: Visible region U.V. region I.R. region None of these None 5. e/m value for positive rays is maximum for: Hydrogen Helium Oxygen Nitrogen None 6. According to Bohr's atomic model, radius of second orbit of hydrogen atom is: 0.529 Ã… 2.116 Ã… 4.0 Ã… 5.0 Ã… None 7. The limiting line of Balmer series lies in the region: Visible U.V. Near I.R Far I.R None 8. Free neutron decays into a proton with the emission of an electron and a_______: Positron Neutrino Beta Particle Helium nucleus None 9. Bohr's model of atom is contradicted by: Photo electric effect Heisenberg's uncertainty principle Pauli's exclusion principle A Aufbau principle None 10. What is the value of (n + l) for the 3s sub-shell? 2 1 5 3 None 11. K-series X-Rays have wavelength: Longer Smaller Same Different None 12. Mass of one mole of electron is: 0.55 mg 0.184 mg 1.673 mg 1.008 mg None 13. For the P sub shell the azimuthal quantum number "l"is: 2 3 0 1 None 14. When the Azimuthal quantum number is 3 then 'm' can have: 5 values 7 values 2 values 3 values None 15. If an electron is free from the attraction of nucleus then its energy is: Negative Positive Zero None of these None 16. Which one of the following series lies in ultraviolet region: Lyman Balmer Paschen Brackett None 17. The d-subshell consists of: 5-orbitals 6-orbitals 7-orbitals 10-orbitals None 18. Lines of Paschen series are produced when electrons jump from higher orbits to --------- orbit. 1st 2nd 3rd 4th None 19. The electronic configuration of an atom is 1s2,2s2,2p4. The number of unpaired electrons in this atom is: 0 2 4 6 None 20. An orbital which is spherical and symmetrical is: s-orbital p-orbital d-orbital f-orbital None 21. Bambardment of a-particles on Beryllium (Be) atom, emits neutron and this process is called: Natural radioactivity Artificial radioactivity Pauli's exclusion principle Hund's rule None 22. Splitting of spectral lines when atoms are subjected to strong magnetic field is called: Zeeman effect Stark effect Compton effect Photoelectric effect None 23. In discharge tube experiment, the pressure of gas was maintained at: 760 torr 0.001 torr 0.01 torr 10 torr None 24. When 4s orbital is complete, the electron goes into: 4p 3d 4f None 25. The electrons occupying an orbital are distinguished by: Magnetic quantum number Principal quantum number Azimuthal quantum number Spin quantum number None 26. Total number of spectral regions in sunlight spectrum is: 4 6 7 8 None 27. The mass of proton is (in kg): +1.6 x 10-19 -1.6 x 10-19 1.672 x 10-27 9.1 x 10-31 None 28. Balmer series in hydrogen spectrum lies in the region: Ultraviolet Visible Infrared Microwave None 29. Angstrom is the unit of: time length mass frequency None 30. Negative charge on cathode rays we established by: William Crook J. Perrin R.A Millikan Hittrof None 1 out of 6 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
