sentences:  However, 72 pm is too long to be representative of the lengths of the bonds between fluorine and other elements, so values between 54 pm and 60 pm have been suggested by other authors.With increasing number of fluorine atoms on the same (geminal) carbon the other bonds become stronger and shorter.This can be seen by the changes in bond length and strength (BDE) for the fluoromethane series, as shown on the table below; also, the partial charges ("q"C and "q"F) on the atoms change within the series.