If p is the momentum of the fastest electron ejected from a metal surface after the irradiation of light having wavelength λ, then for 1.5 p momentum of the photoelectron, the wavelength of the light should be: (Assume kinetic energy of ejected photoelectron to be very high in comparison to work function) :
The degenrate orbitals of [Cr(H2O)6]3+ are
dyz and dz2
dx2 and dxz
dxz and dyz
and dxy
C.
dxz and dyz
dzx, dyz are degenerate in octahedral splitting.
Among the following, the molecule expected to be stabilized by anion formation is:
C2, O2, NO and F2
NO
C2
F2
O2
For any given series of spectral lines of atomic hydrogen, let be the difference in maximum and minimum frequencies in cm-1. The ratio is:
4 : 1
9 : 4
5 : 4
27.5
The ratio of the shortest wavelength of two spectral series of hydrogen spectrum is found to be about 9. The spectral series are:
Paschen and Pfund
Lyman and Paschen
Brackett and Pfund
Balmer and Brackett