Question

Which of the following is made up of a coordinate covalent bond?
sodium chloride (NaCl)
ammonia (NH3)
chlorine (Cl2)
aluminium bromide (AlBr3)
carbon monoxide (CO)

Answer 1

CO is made up of cordinate covalent bond


              hope this helps u....

Answer 2

CO or carbon monoxide forms a coordinate covalent bond.

Explanation:

“A coordinate covalent bond” is one of the covalent bond types wherein the electrons which are forming the origination of bond from the same atom. Coordinate bond forms a central low density area surrounded by one or more areas that have a high density of electrons.

CO or carbon monoxide forms a coordinate covalent bond. Carbon has 6 electrons in the outermost shell whereas oxygen has 8. In a normal molecule, carbon and oxygen will both contribute 2 electrons to the covalent bond to form a double covalent bond. Now, 4 electrons are left in the carbon atom and oxygen with 6 to have completed its octet.

Carbon is therefore unstable and to gain stability, it now needs to complete its octet and need to gain 2 electrons. Carbon cannot contribute electrons because it is already unstable and so oxygen contributes its pair of electrons to form a coordinate covalent bond.