A compound which has non zero dipole moment is a polar molecule.Since,nitrogen gas has a triple bond between the two nitrogen atoms.Since there is no electronegativity difference between the two atoms and hence there is zero dipole moment of the bond.Hence,N2 is a non polar molecule.
Just so, why is there a triple bond in n2?
Nitrogen is a diatomic molecule in the VA family on the periodic table. Nitrogen has five valence electrons, so it needs three more valence electrons to complete its octet. A nitrogen atom can fill its octet by sharing three electrons with another nitrogen atom, forming three covalent bonds, a so-called triple bond.
Which shapes are nonpolar?
Obj. 16. From the name of a molecular chemical, determine the shape and polarity of the molecule.
|Molecular Shape||Are all "outside" atoms identical?||Molecular Polarity|
Which molecule has a bent geometry?
An example of bent molecular geometry that results from tetrahedral electron pair geometry is H2O. The water molecule is so common that it is wise to just memorize that water is a BENT molecule. The oxygen has 6 valence electrons and thus needs 2 more electrons from 2 hydrogen atoms to complete its octet.