An example of a compound with a single covalent bond is 

Give one word or a phrase for the following statement:

• The chemical bond formed by a shared pair of electrons each bonding atom contributing one electron to the pair.

Draw the electron dot diagram for the compound given below. Represent the electrons by (.) and (x) in the diagram.

• Chlorine molecule [Atomic No.$\mathrm{Cl}=17$]