Which of the following species is non polar with presence of polar bond and lone pair of electron on central atom.
Which of the following rules could explain the presence of three unpaired electrons in N-atom?
Which of the following phenomena will occur when two atoms of the elements having same spin of electron approach for bonding ?
Which of the following expressions imposes the condition of quantization of energy of an electron in an atom ?
The energy required for transition in a Hydrogen atom from 1^(st) energy level to the 2^(nd) energy level is E. Then , which of the following transitions is possible for the same energy in Helium atom ?
How do the energy gaps between successive electron energy levels in an atom very from low to high n values ?
Which of the following transitions of electrons in the hydrogen atom will emit maximum energy
