Arrange the following bonds in order of increasing ionic character giving reason.
Arrange the following bonds in order of increasing ionic character giving reason.
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1 Answer
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This is a Short Answer Type Questions as classified in NCERT Exemplar
N—H, F—H, C—H and O—H
Ans: The ionic character in a molecular species is decided by the electronegativity difference between the two bonded atoms. Greater the electronegativity difference between two bonded pairs, the greater will be the ionic character. The electronegativity difference of the given species is
C - F = (2.5 - 2.1) = 0.4
N -H = (3.0 - 2.1) = 0.9
O - H = (3.5 - 2.1) = 1.4
F - H = (4.0 - 2.1) = 1.9
According to the above given difference in the electronegativities, the order of increasing ionic character is:
C – H< N - H
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