Hydrogen Fluoride
It is made up of 1 Hydrogen atom and 1 Fluorine atom being bond together. Hydrogen Fluoride is a colorless, fuming corrosive liquid or a highly soluble corrosive gas, HF, used in the manufacture of hydrofluoric acid, as a reagent, catalyst, and fluorinating agent, and in the refining of uranium and the preparation of many fluorine compounds. Hydrogen Fluoride is formed by covalent bonding. Its constituent elements are Hydrogen and Fluoride. Hydrogen is estimated to make up more than 90% of all the atoms or three quarters of the mass of the universe. This element is found in the sun and most stars, and plays an important part in the proton-proton reaction and carbon-nitrogen cycle, which accounts for the energy of the sun and stars. Hydrogen is the lightest and most abundant chemical element, constituting roughly 75 % of the Universe's chemical elemental mass.[5] Stars in the main sequence are mainly composed of hydrogen in its plasma state. Naturally occurring elemental hydrogen is relatively rare on Earth. Fluorine is the chemical element with atomic number 9, represented by the symbol F. It is the lightest halogen. The free element, never found in nature, is a yellow-green gas. Under normal conditions elemental fluorine forms a diatomic molecule with chemical formula F2. Chemically, fluorine is one of the strongest oxidants known, and is similar to, but even more reactive and dangerous than elemental chlorine. Affinity for electrons of fluorine leads it to direct reactions with all other elements in which the reaction has been attempted, except for helium, neon and argon.
Formation
Hydrogen has one valence electron and fluorine have seven valence electron. As hydrogen needs one more electron and fluorine also needs one more electron, they share the electrons with covalent bond.
Dot and Cross Diagram
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