Chemical Formula of Common Compounds

Compounds are represented by their chemical formulas as symbolic representations of their chemical compositions. In addition to providing insight into the elements that make up a compound, chemical formulas also indicate how these elements combine to form such molecules in a particular ratio. Water, for example, has a chemical formula of H2O, which indicates that two hydrogen atoms combine with one oxygen atom to form one molecule.

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What is a Chemical Formula?

• The chemical formula of a compound provides information about its chemical composition.
• In addition, they show how the basic parts of the compound join in what proportions.
• The chemical formula of a compound is essential when representing it in a chemical equation.
• Chemical equations can also be used to represent ions, free radicals, and other chemical species.
• Objects composed of two or more components in a predetermined ratio are called compounds.
• Chemical formulas can be used to determine the number of atoms in a substance.
• This chart includes symbols for the atoms of each element in the compound and a count of how many of each element there are.

Importance of Chemical Formula

• Formulas provide information about a compound's chemical composition.
• Additionally, they reflect the ratios in which the constituent elements combine to form the compound.
• Its chemical formula is crucial when representing a compound in a chemical equation.
• Chemical formulae can also represent ions, free radicals, and other chemical species.

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Types of Chemical Formula

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How to write Chemical Formula

• It is essential to understand the valencies of the two radicals or elements available.
• In a chemical formula, the number of positive and negative valencies must equal zero. Determine the least frequent multiple between the two valencies.
• Cations (Na+) are positively charged atoms, while anions (Cl-) are negatively charged.
• If a metal is included in the formula, it should usually come first.
• In general, anions with a -1 opposing charge end in -ide. For example, Cl- - chloride.
• The suffix -ate is typically found on oxyanions, which are composed of oxygen and another atom.
• PO43- (Phosphate) Whenever a polyatomic anion contains an H- ion, the suffix bi- or hydrogen is used—for example, hydrogen carbonate or HCO3-Bicarbonate.
• Rust and baking soda are written using these steps.Rust is chemically composed of Fe2O3 (Fe3+ and O2), and it is also called ferric oxide or iron oxide.
• Baking soda's chemical formula is NaHCO3. It is also known as sodium bicarbonate or sodium hydrogen carbonate.
• The following are some polyatomic anions:

Key Features

• A compound's chemical structure is symbolically represented by its chemical formula when described in a chemical equation.
• In addition, they represent the proportions in which the parts are mixed to form the composite.
• Additionally, chemical formulas can represent ions, free radicals, and other chemical species.