Question

What is polarity? What are polar and non polar bonds?

Answer 1

Bond polarity is a useful concept for describing the sharing of electrons between atoms. A nonpolar covalent bond is one in which the electrons are shared equally between two atoms. A polar covalent bond is one in which one atom has a greater attraction for the electrons than the other atom.

Answer 2

if a,b,c are three consecutive terms of an A.P then 2b=a+c

So, 2(2k2+3k+6)=k2+4k+8+3k2+4k+4

4k2+6k+12=4k2+8k+12

6k=8k

∴k=0