Which of the following has maximum dipole moment?
Electronegativity difference between N (3.0) and Cl (3.0) is zero and hence, N – Cl bonds are non-polar. As a result, the overall dipole moment of molecule and its direction is just the dipole moment of the lone pair of electrons.
On the other hand, N – Br, (3.0-2.8), N – I (3.0 – 2.5) and N – H (3.0 – 2.1) are polar and hence, contribute towards the overall dipole moment of the respective molecules. Since, the EN difference is higher in case of N – H bonds, therefore, has the higher dipole moment.
CaO and NaCl have the same crystal structure and approximately the same ionic radii. If U is the lattice energy of NaCl, the approximate lattice energy of CaO is
The correct sequence of decreasing dipole moments of the following molecules will be
Which of the following species is not paramagnetic?
The correct order of decreasing bond length for , NO and NO+ is
Among the species: which has the weakest C – O bond?
Which bond angle would result in the maximum dipole moment for the triatomic molecule yxy?
The dipole moment of HBr is and interatomic spacing is The %ionic character of HBr is
In a polar molecule, the ionic charge is If the interionic distance is unit, then the dipole moment is
In which one of the following cases, breaking of covalent bond takes place?
Which of the following does not contain coordinate bond?