Goh Hao Wei (8)

Hydrogen Fluoride

It is made up of 1 Hydrogen atom and 1 Fluorine atom.

Chemical Bond

It is a covalent bonding.

Harmful Effects

-cause damage to plants

-harmful to cattle and other domestic animals

-cause abnormalities such as discoloration of teeth and skeletal deformities

Constituent Elements

Hydrogen

Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of 1.00794 u (1.007825 u for Hydrogen-1), 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

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