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

Explanation

Electronegativity difference
`{:(" "N-H" "F-H" "C-H" "O-H),(" "3.0-2.1" "4.0-2.1" "2.5-2.1" "3.5-2.1),(" =0.9 = 1.19 = 0.4 = 1.4"):}`
Increasing order of electronegativity difference :
`C-H lt N-H ltO-H lt F-H`
Greater is the difference in electronegativity between two bonded atoms, greater is the ionic character.