Important Questions of Structure of Atom Chemistry | Zigya

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

Advertisement
391.

The isoelectronic pair is

  • Cl2O, ICl2-

  • ICl2-, ClO2

  • IF2+, I3-

  • ClO2-, ClF2+


392.

α-Particles can be detected using

  • thin aluminium sheet

  • barium sulphate

  • zinc sulphide screen

  • gold foil


393.

The most probable radius (in pm) for finding the electron in He+ is

  • 0.0

  • 52.9

  • 26.5

  • 105.8


394.

How many neutrons are there in nucleus 'X', if it gives 7N14 after two successive β - particle emissions ?

  • 7

  • 10

  • 14

  • 09


Advertisement
395.

The energy equivalent to 1 amu., is :

  • 931.1 MeV

  • 1.492 x 1013 erg

  • 1000 J

  • 107 erg


396.

Which particle can be used to change 13Al27 into 15P30 ?

  • Neutron

  • α - particle

  • Proton

  • Deuteron


397.

According to Bohr, the angular momentum of an electron, in any orbit, should be :

  • h/2π

  • nh/2π

  • h/mv

  • 2π/nh


398.

Quantum numbers of an atom can be defined on the basis of :

  • Hund's rule

  • Pauli's exclusion principle

  • Aufbau's principle

  • Heisenberg's uncertainty principle


Advertisement
399.

Which of the following has maximum energy ?


  • 3s                      3p                                     3d
                 

  • 3s                      3p                                   3d
               

  • 3s                     3p                                     3d
             

  • 3s                    3p                                 3d
               


400.

Spectrum of Li2+ is similar to that of :

  • H

  • Be

  • He

  • Ne


Advertisement