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

To arrange the bonds in order of increasing ionic character, we need to consider the electronegativities of the atoms involved in each bond. Ionic character increases as the electronegativity difference between the atoms in the bond increases. The greater the electronegativity difference, the more polar the bond becomes, and it approaches the characteristics of an ionic bond.

Here are the electronegativities of the elements involved:

• N: 3.04
• F: 3.98
• C: 2.55
• O: 3.44
• H: 2.20

Now, let's arrange the bonds in order of increasing ionic character:

1. C-H bond: Carbon (C) and hydrogen (H) have similar electronegativities, so the C-H bond is considered to be nonpolar covalent. There is no significant electronegativity difference between carbon and hydrogen, so the bond has minimal ionic character.

2. N-H bond: Nitrogen (N) has a higher electronegativity than carbon but lower than fluorine and oxygen. The electronegativity difference between nitrogen and hydrogen is higher than that between carbon and hydrogen, resulting in a more polar bond compared to C-H. However, it is still predominantly covalent in nature.

3. O-H bond: Oxygen (O) is more electronegative than nitrogen, resulting in a higher electronegativity difference between oxygen and hydrogen. The O-H bond is more polar compared to the N-H bond, indicating higher ionic character.

4. F-H bond: Fluorine (F) is the most electronegative element in the given list. The electronegativity difference between fluorine and hydrogen is the highest among the bonds listed. Therefore, the F-H bond exhibits the highest ionic character among the given bonds.

So, the order of increasing ionic character is: C-H < N-H < O-H < F-H