The following are some statements about dipole moment.i) The dipolemoment of any covalent molecule is zeroii) The dipolemoment of a diatomic molecule having non–polar bonds is zeroiii) The dipolemoment of a diatomic molecule having polar covalent bond is non–zero.

(i) Dipole moment of any covalent molecule is zero .........false.    A covalent molecule can be polar (or) non-polar(ii) Dipole moment of homodiatomic molecule is zero ......true    μ of H2,X2,N2,O2 is zero.(iii) Dipole moment of hetero diatomic molecule is non- zero ......true    μ of NO,CO,HX,O2 is zero.