Question

Which of the following molecules contain polar covalent bonds: CO, N₂, NH₃, NH₄⁺, and HCl?

CO, NH₃, NH₄⁺ and HCl

CO and NH₃

All of the species contain polar covalent bonds.

CO and HCl

CO, NH₃, and N₂

Answer 1

CO, NH3, NH4+ and HCl contain polar covalent bonds

N2 molecule does not contain polar covalent bond

Polar covalent bonds : CO NHA NHI and HCL molecule contain Potar covalent bonds = co; is a carbon oxygen containing diatomic molecule - There is much greater difference between. electronegativities of Carbon & oxygen Polar covalent bonds are formed by sharing of electron pair where one atom is less electronegative compare with another In this 6-0 is a polar covalent bond due to difference in a electronegatio -vities NH, is a 3 N-H Polar covalent bonds contouning molecules. we know that there is difference in nitrogen & Hydrogen atoms electronegativity due to this they are a polar covalent. bonds Nt is also a N-H polar covalent bonds containing molecule Here writ is a salt of NH₃ and consider as a non-polar molecule even though because of N-H bond is a polar covalent bonds

HCL is contain H-cl bond which is a polar covalent bond There is chlorine contain more electroncgativity than hydrogen which forms a dipole & because of that this bond is a Polar covalent bond andre 2 D i o * N₂ is not contain polar covalent bond NEN (N22, this bond is made up of same. I atom that is nitrogene because of that there is some electronegativity of no separation- of dipole is takes place Hence this is not a polar covalent bond