The alkaline earth metals (the second group) because their ion charge is +2
Answer:
Energy is released when bonds are broken, and energy is absorbed when bonds are formed.
There would be 2 which would be on the oxygen
Lets find the electronegativity difference between the bonded atoms;
C-H = 2.6-2.2 = 0.4
C-F = 4.0-2.6 = 1.4
F-F = 4.0-4.0 = 0
H-O = 3.4-2.2 = 1.2
Here the electronegativity difference is highest for C-F bond hence C-F bond is most polar.
