The charge/size ratio of a cation determines its polarizing power. Which one of the following sequences represents the increasing order of the polarizing order of the polarizing power of the cationic species, K⁺, Ca²⁺, Mg²⁺, Be²⁺?

Which one of the following conversions involve change in both hybridization and shape?

Among the following mixtures, dipole-dipole as the major interaction, is present in

Which of the following molecules/ions does not contain unpaired electrons?

A molecule (X) has
(i) four sigma bonds formed by the overlap of sp² and s orbital
(ii) one sigma bond formed by sp² and sp² orbitals and
(iii) one π bonds is formed by P_x and P_x orbitals
Which of the following is X?

Which of the following contains maximum number of lone pairs on the central atom?

Malleability and ductility of metals can be accounted due to

Lattice energy of an ionic compound depends upon

The bond length of HCl molecule is 1.275 Å and its dipole moment is 1.03 D. The ionic character of the molecule (in percent)(charge of electron 4.8 × 10^–10 esu) is

Which one of the following is paramagnetic?