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10.2b)explain why the water ona clean glass surface tends to spread out while mercury on the same surface tends to form drops.(put differntly,water wet glass while mercury does not)

Asked by Shabnakp 12th January 2013, 11:09 PM
Answered by Expert
Answer:
Mercury molecules (which make an obtuse angle with glass) have a strong force of attraction between themselves and a weak force of attraction toward solids. Hence, they tend to form drops.

On the other hand, water molecules make acute angles with glass. They have a weak force of attraction between themselves and a strong force of attraction toward solids. Hence, they tend to spread out.

Answered by Expert 12th January 2013, 11:23 PM
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