The value of e/m ratio of electron is________________?

Related Mcqs:

1. When an electron is moving with velocity of 2.188 x 106 ms-1 in the first orbit of Bohrs model of hydrogen. The de Broglie wavelength of electron is______________?

   A. 0.33 nm
   B. 0.34 nm
   C. 0.35 nm
   D. 0.36 nm

2. An element having low value of ionization energy and low value of electron affinity is likely to belong to__________________?

   A. Group IA
   B. Group IB
   C. Group VIIA
   D. Group VIII

3. Quantum number which tells the energy of electron is________________?

   A. n
   B. 1
   C. m
   D. s

4. The mass of one mole of electron is________________?

   A. 1.008
   B. 0.55
   C. 0.184
   D. 1.637

5. Which of the following will have highest value of electron affinity_________________?

   A. F
   B. Cl
   C. Br
   D. I

6. Higher value of electron affinity means__________________?

   A. Atom will lose electron easily
   B. Atom will gain electron easily
   C. Atom may form di-positive ion
   D. The reason is unknown

7. The absolute value of charge on electron was determined by ________ ?

   A. J.J.Thomson
   B. Chadwick
   C. Rutherford
   D. Robert Millikan

   Submitted by: Rashid Mehmood

8. When electron jump into orbit 1 then series obtained is___________________?

   A. Lyman
   B. Paschen
   C. Pfund
   D. Brackett

9. Charge of electron was measured by__________________?

   A. J.J Thomson
   B. Millikan
   C. Rutherford
   D. Perrin

10. Wavelength of electron was verified by_________________?

    A. Moseley
    B. Davisson and Germer
    C. Einstein
    D. Roentgen