Question

Shorter bonds are seen in very ___________(unequal, equal) sharing of electrons as seen in bonds between atoms with very ____________ (equal, unequal) electronegativities, as well as with double bonds compared to single bonds

Answer 1

Sharing of pair of electrons between atom Called covalent bond. rightarrow H - Hn C -H etc. Bonds lengths are depends on hybridization also I_ n alkanes c -c bond length 154 pm I_ n alkenes c = c bond length 134 pm I_ n c equalization bond length 120 pm Carbon electronegativity of carbon is 2.55 rightarrow H -H = 74pm C - H = 110 pm H - I = 161 pm C - O = 143 pm N - = 145 pm electronegativity difference will form ions. rightarrow Na - Cl here chlorine E.N higher 0.93 3.16n itan sodium so it forms ions. Shorter bonds will observed equal or un equal sharing E.N equal (or) un equal both cases we will observe. In alkanes sp^3 hybridisation we will observe. 's' character 25% 154 pm rightarrow in alkenes sp^2 hybridisation 's' character 33.33 134 p m n