pre dent

Hey all, I am just wondering if I'm on the right track. I am starting my Junior year this fall and so far I have done: oGPA: 3.86 sGPA: 3.77 1) Major: BA in economics 2) Shadowing: around 50 hours so far 3) Finished my internship of 4 months and got a job from it 4) Going to join some...

Yoooooo can someone please give me an easy way of telling if somethings polar or non polar. I'm sick of drawing these lewis each time and checking for symmetry and dipole and all that.. i know theres trick.. like if s is a central atom its polar? yea? no? idk. help! :(((((