for a molecule to be polar it must have
Chemical polarity Polar molecules must contain polar bonds due to a difference in electronegativity between the bonded atoms. A polar molecule with two or more polar bonds must have a geometry which is asymmetric in at least one direction, so that the bond dipoles do not cancel each other.
The Polar Express The Polar Express is a children's book written and illustrated by Chris Van Allsburg and published by Houghton Mifflin in 1985. The book is now widely considered to be a classic Christmas story for young children although the point has been challenged.[a] It was praised for its detailed illustrations and calm, relaxing storyline. For the work Van Allsburg won the annual Caldecott Medal for illustration of an American children's picture book in 1986, his second.[1][2]