Identify the molecules with a dipole moment: (a) sf (b) cf (c) cccb (d) chci (e) h. co

An atom has either tendency of accepting or losing electron, on the basis of this virtue it is named as

Electronegative: An atom has tendency to attract the shared pair of electron towards itself is called electronegative.Electropositive: An atom that has tendency to give the shared pair of electron towards an electronegative atom is called electropositive.

For the existence of dipole within a molecule there must be a difference in electronegativity of the atoms participating in it. All the molecules here have dipole moment because the atoms participating in them have a difference in electronegative.

It is called a neutralization reaction

Yes it would be a physical change.