Chemistry: Compounds and Bonds Overview

NF3 is known as Nitrogen Trifluoride, a compound with nitrogen and fluorine.
Iron (III) Oxide has the chemical formula Fe2O3, indicating its oxidation state.
A compound forms when two or more elements chemically combine, resulting in a new substance.

Oxidation numbers help determine how many electrons an atom gains or loses during compound formation.
To assign oxidation numbers: identify element symbols, assign based on Roman numerals for metals and the periodic table for nonmetals.
Follow a crisscross method for oxidation numbers, reducing only if necessary.

Ionic bonds occur when metals bond with nonmetals or when metals bond with other metals, typically resulting in gaining or losing electrons.
Covalent bonds form between nonmetals, where they share electrons.

Sodium Chloride is represented by the formula NaCl.
Iron (III) Nitride is denoted as Fe3N3, showcasing the combination of iron and nitrogen.
Calcium nitride is represented as Ca3N2, formed from calcium and nitrogen.
Chromium Phosphide has the formula Cr3P2, illustrating the bond between chromium and phosphorus.
Dinitrogen Trioxide is expressed as N2O3, a compound with nitrogen and oxygen.
Carbon Monoxide is represented by the formula CO, indicating a compound of carbon and oxygen.
Tetrafluorine Dioxide is denoted as F4O2, indicating four fluorine atoms bonded to two oxygen atoms.

Ionic compounds typically form crystalline structures.
They have high melting points due to strong electrostatic forces between ions.
Ionic compounds can conduct electricity when dissolved in water or melted, allowing movement of ions.