A. 4,12,32

B. 4,16,30

C. 4,16,32

D. 4,32,64

What is the correct order of spin only magnetic moment (in BM) of Mn<sup>2+</sup>, Cr<sup>2+</sup> and V<sup>2+</sup> ?

The energy of a photon is 3 x 10<sup>-12</sup> ergs.What is its wavelength in nm ?<br>( h = 6.62 x 10 <sup>-27</sup>ergs-s ; c = 3 x 10 <sup>10</sup> cm/s )

Which one of the following sets correctly represent the increase in the paramagnetic property of the ions

Electrons with a kinetic energy of 6.023 x 10<sup>4</sup> J/mol are evolved from a surface of a metal, when it is exposed to radiation of wavelength of 600 nm, The minimum amount of energy required to remove an electron from the metal atom is <br>

The wavelengths of electron waves in two orbits is 3 : 5. The ratio of kinetic energy of electrons will be