Subjective Type

Arrange the following bonds in order of increasing ionic character giving reason. $$N—H, F—H, C—H$$ and $$O—H$$.

Solution

Ionic character of the bond depends on the difference of electronegativity. It is directly proportional to difference of electronegativity. In the following bonds, hydrogen is in all but other atoms have different electronegativity.
$$N—H, F—H, C—H$$ and $$O—H$$

Increasing order of electronegativity is:
$$C
Therefore, $$\text{ionic character }$$ of the bond (Increasing order)
$$C-H

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