This would be an ionic bond.
The electronegativity of Hydrogen is about 2.2 and the electronegativity of Fluorine is about 4.0. The difference is 1.8 which is greater than 1.7, the minimum difference for an ionic bond.
Added:
Or it is (at least) a very polar-covalent bond. Figures 1.7 or 1.8 are in the 'discussion' range
Yes, Na and F would form an ionic bond rather than a polar covalent bond. This is because Na tends to donate one electron to F, resulting in the formation of Na+ and F- ions which are held together by electrostatic attractions.
The bond between F and Sr would be an ionic bond, as Sr can easily donate its valence electron to F to form Sr2+ and F- ions, resulting in an attraction between the two ions.
The bond between O and F would be a covalent bond (dative/coordinate), if in fact OF existed. More likely it would exist as OF2 (still covalent bonds).
The F-F bond (in F2) is covalent, and non polar covalent at that.
bond energy (in kJ/mol) F-F:158 Cl-Cl: 244 Hence, in order of decreasing bond strength: Cl-Cl => => (F-F) => Fluorine is an anomaly. Bond strength decreases from chlorine to iodine as down the group, the atomic size becomes larger and thus the valence electron orbitals become more diffused, causing the overlap of orbitals to become less effective. Therefore the halogen-halogen bond becomes weaker. Fluorine is an exception due to its extremely small size. The F-F bond length is so short that the lone pairs of electrons on the fluorine atoms repel each other and weakens the F-F bond. I hope that answers your question.
The H-F bond is more polar than the H-I bond because F (fluorine) is more electronegative than I (iodine). It thus attracts the shared electrons more than does the I, making it a more polar bond.
Arthur James F. Bond died in 1958.
George F. Bond died on 1983-01-03.
George F. Bond was born on 1915-11-14.
The bond angle in IOF5 is approximately 90 degrees. This is because of the trigonal bipyramidal geometry of the molecule, where the equatorial F-I-F bond angles are around 120 degrees and the axial F-I-F bond angles are around 180 degrees.
Carbon and fluorine are both non metals. When they form a chemical bond they share electrons making this a covalent bond.
The bond between K (potassium) and F (fluorine) to make KF is an IONIC bond.