Two electrons in the same atomic orbital can be distinguished by their
Principle quantum number
Azimuthal quantum number
Magnetic quantum number
Spin quantum number
How many number of spherical nodes will be in 4p orbitals ?
1
3
2
Zero
What is the ratio between the energy of a photon of 1500 Ao wave length radiation to that of 3000 Ao wave length radiation ?
1/4
1/2
4
The quantum number +1/2 and -1/2 for the electron spin represent
Rotation of the electron in clockwise and anticlockwise direction respectively
Rotation of the electron in anticlockwise and clockwise direction respectively
Magnetic moment of the electron pointing up and down respectively.
Two quantum number mechanical spin states which have no classical analogue.
The maximum kinetic energy of photo electrons ejected from a metal when it is irradiated with radiation of frequency 3.5 × 1014 s-1 is 6.626 × 10-20J.What is the threshold frequency of the metal ?
2.5 × 10-14 s-1
4.5 × 1014 s-1
2.5 × 1014s-1
2 × 10-14 s-1
What is the maximum number of electrons in an atom that can have the quantum numbers n = 3, ml = +1 ?
8
16
6
How many electrons will be present in the highest principal energy level of cobalt (z = 27) ?
7
9
Which one of the following does Bohr theory fails to explain ?
Stability of hydrogen
Line spectra of hydrogen atom
Line spectra of Lli2+
Splitting of spectral lines in the presence of magnetic field
The correct set of quantum numbers for the unpaired electron of chlorine atom is
n = 3, l = 1, ml = 1
n = 2, l = 1, ml = 0
None of these
Which orbital have zero electron density in xy plane ?
pz
dz2
dxy
dx2 - y2
