Question

Bond strength of H2 and HF​

Answer 1

Answer:

The polarity of the O-H bonds in H2O is intermediate between that of H-F and N- H bonds. It is expected that the individual H-bonds between H2O molecules will also be intermediate in strength. Each H2O molecule possesses 2 lone pairs on O and 2 H. H2O molecules are thus able to form an average of 4 H-bonds.

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Answer 2

Answer :

Context to H2 and F2, F2 has a weaker bond due to long pair repulsion and also involves P overlap. Hence lengthening bond length and declining bond strength. While H2 shows S overlap lap which is relatively stronger than that of F2 as can be seen in their values.

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