Total number of lone pair of electrons in XeOF4 is

The d-orbitals involved in sp³d hybridisation is

The atomic number of Sn is 50. The shape of gaseous SnCl₂ molecule is

The ratio of σ to π bonds in mesitylene is

Which of the following are iosoelectronic and isostructural

Increasing order of bond length in NO, NO⁺ and NO⁻ is