If and be the threshold wavelength and wavelength of incident light, the velocity of photoelectron ejected from the metal surface is :
As discussed in the concept
Photoelectric Effect -
m is the mass of the electron
u is the velocity associated with the ejected electron.
h is plank’s constant.
v is frequency of photon,
v0 is threshold frequency of metal.
Hence the correct option is 3
Chloro compound of Vanadium has only spin magnetic moment of 1.73 BM. This Vanadium chloride has the formula :
(at. no. of V=23)
As discussed in
Magnetic Quantum Number (m) -
It gives information about the spatial orientation of the orbital with respect to standard set of co-ordinate axis.
The value of magnetic moment is 1.73 BM
where n is the number of unpaired electrons
After calculation n = 1
To obtain one unpaired electron V should be tetrapositive ion and the formula of its chlorid should be
Option 2 is correct
The energy absorbed in the transition of the electron from n=2 to 1 in H-atom will be
Element with electronic configuration belongs to which group of the periodic table?