Centrifugal forces are balanced in atom by__________________?

Related Mcqs:

1. Distance at which attractive forces of hydrogen overcome repulsive forces is __________ ?

   A. 75.2pm B. 75.3pm C. 75.5pm D. 75.4pm Submitted by: Rashid Mehmood...

2. The balanced chemical equation for the reaction which occurs when Be is added to water is____________?

   A. Be+2H2O?Be (OH)2+H2 B. Be+H2O?Be (OH)2+H2 C. Be+H2O?[Be (OH)4]+2+H2 D. no reaction...

3. The maximum amount of product obtained by balanced chemical equation is called as __________?

   A. Practical yield B. Theoretical yield C. Actual yield D. NOT Submitted by: Aamir khan Hullio...

4. All of the following were theorized by Bohr in his description of the atom except__________________?

   A. Angular momentum of electrons in multiples of h/2? B. Electrons revolve in discrete circular orbits C. Energy of each electron is directly proportional to n2 D. Electrons radiate energy continuously in a given orbit....

5. When an atom absorbs energy the lines in the spectrum will appear which are_________________?

   A. Brighter B. Darker C. Colourless D. Hard to locate...

6. Splitting of spectral lines when atom is subjected to magnetic field is called _______________?

   A. Zeemans effect B. Starks effect C. Photo electric effect D. Compton effect...

7. 2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?

   A. 2-times B. 3-times C. 4-times D. 6 times...

8. Atom with higher atomic number produces X-rays of__________________?

   A. Shorter wavelength B. Larger wavelength C. X-ray not produced D. All are possible...

9. Atom cannot be divided into simple unitstheorized by________________?

   A. Rutherford B. Dalton C. Bohr D. Schrodinger...

10. The number of fundamental particles in an atom of the lightest isotope carbon are_______________?

    A. 6 B. 12 C. 18 D. 20...