Which type of hybridisation is present in ammonia molecule? Write the geometry and bond angle present in ammonia.

Identify the type of overlap present in ${\mathrm{H}}_2$.

Identify the type of overlap present in ${\mathrm{F}}_2$.

Identify the type of overlap present in$\mathrm{HF}$.

In the case of bond formation in acetylene molecule: How many covalent bonds are formed?

In case of bond formation in acetylene molecule: State number of sigma and pi bonds formed.

In case of bond formation in acetylene molecule: Name the type of hybridisation.