CHEM BRAIN

  

This is a sample of test and tricks

  

This is test 1

  

This is test 2

  

Molecular polarity is calculated by Dipole moment( \( \mu \)). If central atom doesn't have any lone pair and surrounded by same type of atoms then this molecule is consider as non-polar molecule.

| Bond Polarity is calculated by difference in electronegativity (\( \Delta E.N \) )      \( \Delta E.N > 0.5 \rightarrow Polar \)     \( \Delta E.N < 0.5 \rightarrow Non-Polar \)