The number of hydrogen bonds formed by a wate | vedclass

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Question

(D) In a water molecule $(H_2O)$,the oxygen atom is $sp^3$ hybridized and has two lone pairs of electrons. Each water molecule can form hydrogen bonds

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(D) In a water molecule $(H_2O)$,the oxygen atom is $sp^3$ hybridized and has two lone pairs of electrons. Each water molecule can form hydrogen bonds through its two hydrogen atoms (as donors) and its two lone pairs on the oxygen atom (as acceptors). Therefore,a single water molecule can theoretically form up to $4$ hydrogen bonds with surrounding water molecules. In liquid water at $25^{\circ}C$,due to thermal motion,the average number of hydrogen bonds per molecule is approximately $3.4$ to $3.6$. Among the given options,$4$ represents the maximum number of hydrogen bonds a water molecule can form in its tetrahedral structure. Hence,the correct option is $(D)$.

The number of hydrogen bonds formed by a water molecule at normal conditions is

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