Question

The maximum number of hydrogen bonds that a molecule of water can have is, a) 1 b) 2 c) 3d) 4.
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Answer 1

Water is unique because its oxygen atom has two lone pairs and two hydrogen atoms, meaning that the total number of bonds of a water molecule is up to four. The number of hydrogen bonds formed by a molecule of liquid water fluctuates with time and temperature.

4 is the answer for your question.