The diameter of an atom is approximately_______________?

Related Mcqs:

1. According to which one of following law the density of atom is uniform ?

   A. J.J.Thomson model
   B. Rutherfords model
   C. Bohrs model
   D. All of the above laws contradict the statement

2. The energy liberated when one atom of U-235 undergoes fission reaction is________________?

   A. 200MeV
   B. 40MeV
   C. 30MeV
   D. 20MeV

3. During an encounter with an atom alpha particle knocks out ______________?

   A. Protons
   B. Electrons
   C. Neutrons
   D. Nothing

4. In simple cube one atom or molecule lies at its______________________?

   A. Force corners
   B. Nine corners
   C. Eight corners
   D. Six corners

5. Ratio of the weight of H-atom to that of an electron is approximately______________?

   A. 18.336
   B. 1836
   C. 18360
   D. 183.6

6. Hydrogen atom does not emit X-rays because _________________?

   A. its energy levels are too close to each other
   B. its energy levels are too far apart
   C. it is too small in size
   D. it has a single electron

7. Ground state energy of the 4th orbit in a H-atom is_____________?

   A. 13.60 eV
   B. 3.40 eV
   C. 0.85 eV
   D. 1.51 eV

8. In an electronic transition atom cannot emit______________?

   A. γ-rays
   B. Infra red radiation
   C. Visible light
   D. Ultraviolet rays

9. The metastable state for an atom in laser light is_____________?

   A. 10-4 sec
   B. 10-5 sec
   C. 10-3 sec
   D. 10-8 sec

10. Atom is the smallest particall which is_________?

    A. Indivisible 
    B. Divisible
    C. Both
    D. Non of these

    Submitted by: Kamran khan