Sir, Please clear me about " Polar bonds ...and... Polar compounds "

Asked by  | 11th Mar, 2013, 08:48: PM

Expert Answer:

A polar bond results when different atoms share electrons. One atom will attract the bonding electrons more strongly than the other atom and will acquire more than a half share of these electrons. This leaves the other atom with less than a half share and makes the electron distribution unsymmetrical. On a time-average basis the electrons spending more time with one atom and cause it to have a partial negative charge. The other atom, deficient in electrons, acquires a partial positive charge. A polar bond is a type of covalent bond between two atoms or more in which electrons are shared unequally. For example: H2O; here hydrogen has a slight positive charge and oxygen has a slight negative charge.  Polar covalent bond results with an unequal sharing of electrons. It's a molecule in which the bond dipoles present do not cancel each other out and thus results in a molecular dipole. 

Aswered by  | 12th Mar, 2013, 10:49: AM

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