Total number of lone pair of electrons in XeOF4 is

The d-orbitals involved in sp³d hybridisation is

The strength of bonds by 2s – 2s, 2p – 2p and 2p – 2s overlapping has the order

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