BF₃ is a planar and an electron deficient compound. Hybridization and number of electrons around the central atom, respectively are: 

Which of the compounds depicted below will exhibit a linear structure?

1. NO₂

2. HOCl

3. O₃

4. N₂O

Match the coordination number and type of hybridization with the distribution of hybrid orbitals in space based on Valence bond theory.

How many (i) sp² hybridised carbon atoms and (ii) $\mathrm{\pi }$ bonds are present in the following compound?

1. 7, 5

2. 8, 6

3. 7, 6

4. 8, 5