When electron jump into orbit 1 then series obtained 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. 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

3. When light is exposed to transition element then electrons jump from lower orbitals to higher orbitals in______________________?

   A. orbitals of f-subshell
   B. orbitals of d-subshell
   C. orbitals of p-subshell
   D. both A & B

4. The maximum number of electron in a sub shell with ? = 3fs______________?

   A. 6
   B. 10
   C. 14
   D. 18

5. The value of e/m ratio of electron is________________?

   A. 6.02 x 1023 C/kg
   B. 1.7588 x 1020 C/kg
   C. 9.1095 x 10-31 C/kg
   D. 1.7588 x 1011 C/kg

6. Charge of electron was measured by__________________?

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

7. Wavelength of electron was verified by_________________?

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

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

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

9. When 6d orbital is complete the entering electron goes into_________________?

   A. 7f
   B. 7s
   C. 7p
   D. 7d

10. 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