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Nonpolar covalent.
Fluorine atoms have a covalent bond between each other to form a covalent molecule. Fluorine bonded to a metal will have ionic bonds. Fluorine bonded to a non-meatl will have polar covalent bonding.
Ionic bond
Chlorine can form both ionic and covalent bonds. For example:-NaCl- Here bond between chlorine and Sodium is ionic.HCl- Here bond between Hydrogen and Chlorine is covalent.
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A hydrogen bond is a very strong dipole-dipole bond. A hydrogen bond can only form between hydrogen and a strong electromagnetic atom; fluorine, oxygen or chlorine.
Fluorine and chlorine do form ionic bonds, albeit not with each other. They are both members of the halogen family, and form fluoride or chloride ions, with a single negative charge (as they gain an electron when reacting with metals).
Nonpolar covalent.
Fluorine atoms have a covalent bond between each other to form a covalent molecule. Fluorine bonded to a metal will have ionic bonds. Fluorine bonded to a non-meatl will have polar covalent bonding.
Ionic bond
no
fluorine and silicon form a perdominately ionic bond. fluorine is a nonmetal and silicon is a metal.
As fluorine, oxygen and nitrogen do, the bond polarity in a -H-Cl bond is not adequate to form hydrogen bonds.
Fluorine Chlorine Bromine
Chlorine can form both ionic and covalent bonds. For example:-NaCl- Here bond between chlorine and Sodium is ionic.HCl- Here bond between Hydrogen and Chlorine is covalent.
Ionic bond, as the difference in electronegativity between calcium and fluorine is over 1.7