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Online MCQ test on Structure of atom – Classical mechanics
– In this topic we offer you, online MCQ test in the fundmental of Structure of atom – Classical mechanics .
– It is a simple test to measure the strength of your knowledge in the basics of understanding the topics of Structure of atom – Classical mechanics.
– The test consists of only (20) questions (multiple choice) you must answer all of them so that your final score appears automatically at the top of the topic.
– you will pass the Exam If get 70% or more.
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#1. The spectrum of helium is expected to be similar to that of ___
#2. If (Z) is the number of proton and (A) the number of nucleons, then the number of neutrons is an atom is given by ___
#3. The number of electrons in the outermost shell of Potassium (at. no. 19) is ___
#4. In a sodium atom (atomic number = 11 and mass number = 23), the number of neutrons is ___
#5. A sub atomic particle which has one unit mass and one unit positive charge is known as ___
#6. In Bohr’s model of atom, the angular momentum of an electron orbiting around the nucleus is given by the relation
#7. Electromagnetic radiations with minimum wavelength is ____
#8. The maximum number of electrons is the outermost orbit is ____
#9. Cathode rays are deflected by _____
#10. The energy of an electron in the first Bohr orbit for hydrogen is ____
#11. Atomic number of an element is equal to the number of _______ in the nucleus of the atom
#12. The charge to mass ratio (e/m) of positive particles.
#13. The Balmer series in the spectrum of hydrogen atom falls in ___
#14. The effect of electric field on the spectra of atoms is called _____
#15. In the spectrum of hydrogen atom, the series which falls in ultraviolet region is
#16. The ground state of an atom corresponds to a state of ________
#17. The idea of stationary orbits was first given by ___
#18. An atom of Calcium (at. no. 20) contains _______ electrons in the third energy level.
#19. When the source emitting lines is placed in a strong magnetic field the spectral lines are split into its components. This effect is called ____
#20. Out of the following pairs of elements which has the same number of electrons in the outer most energy level?
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