Polarizability of polar molecules

By combining Equations (41) and (44), the orientation polarizability of a dipolar molecule can be calculated as 

However there are exceptions in a very high electrical held, such as when water molecules are placed near a small ion or when the temperature is very low where kT is very small, the orientation polarizability concept breaks down, and a dipolar molecule completely aligns along the held however the induced polarizability still applies. 

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