Pls explain the reason also
Q.60. Arrange the following bonds in the order of increasing ionic character : C H, F H, Br H, Na I, K F and Li Cl.
Dear student
Firstly compare all the bonds of the compounds on the basis of the electronegativity differences. C-H bond will be least ionic as there is very little difference in the electronegativity between C and H. Now, out of Br-H and F-H, Br-H will be more polar as it will have a higher dipole moment. Where as although the difference in electronegativity between H-F is more but F can not easily accept an electron due to inter electronic repulsions so the bond also will be less polar or ionic. However the electronegativity difference between K-F is maximum as K is an alkali metal so will be maximum electropositive and thus will be the ionic character of the bond. Also Na-I will be more polar or more ionic than Li-Cl since Li is a small cation and thus will polarise the anion easily.
Therefore, the increasing order of ionic character will be:
C-H < F-H < Br-H < Li-Cl < Na-I < K-F
Hope this information clears your doubts about the topic.
Looking forward to hear from again!!
Regards
Firstly compare all the bonds of the compounds on the basis of the electronegativity differences. C-H bond will be least ionic as there is very little difference in the electronegativity between C and H. Now, out of Br-H and F-H, Br-H will be more polar as it will have a higher dipole moment. Where as although the difference in electronegativity between H-F is more but F can not easily accept an electron due to inter electronic repulsions so the bond also will be less polar or ionic. However the electronegativity difference between K-F is maximum as K is an alkali metal so will be maximum electropositive and thus will be the ionic character of the bond. Also Na-I will be more polar or more ionic than Li-Cl since Li is a small cation and thus will polarise the anion easily.
Therefore, the increasing order of ionic character will be:
C-H < F-H < Br-H < Li-Cl < Na-I < K-F
Hope this information clears your doubts about the topic.
Looking forward to hear from again!!
Regards