How To Name Covalent Molecular Compounds - The Easy Way!

TL;DR

Learn how to distinguish and name covalent molecular compounds using prefixes for different elements and subscripts.

Transcript

in this video we're going to talk about how to name covalent molecular compounds now the first thing you need to be able to do is you need to be able to distinguish a molecular compound from an ionic compound because the rules for naming these compounds are different for example mgcl2 compared to scl2 mgcl2 is called magnesium chloride whereas scl2... Read More

Key Insights

• 🤘 Naming covalent molecular compounds requires distinguishing them from ionic compounds, usually through the presence of metal and non-metal atoms.
• 🧐 Prefixes are used to indicate the number of atoms, ranging from mono for one to deca for ten.
• 😒 The first element in a covalent molecular compound does not use the "mono" prefix if the subscript is one.
• 📛 The second element in a compound is named using the suffix "-ide."

Questions & Answers

Q: How do you differentiate between molecular and ionic compounds?

Molecular compounds are typically composed of two nonmetals, while ionic compounds contain a metal and a non-metal. However, there are exceptions such as ammonium nitrate.

Q: When should prefixes be used in naming molecular compounds?

Prefixes should be used when naming molecular compounds to indicate the number of atoms for each element. The prefixes include mono, di, tri, tetra, penta, hexa, hepta, octa, nana, and deca.

Q: How do you name carbon monoxide and carbon dioxide?

Carbon monoxide is named as such because it only has one oxygen atom. However, carbon dioxide is named with the prefix "di" because it has two oxygen atoms.

Q: What is nitrogen dioxide and dinitrogen pentoxide?

Nitrogen dioxide consists of one nitrogen atom and two oxygen atoms. Dinitrogen pentoxide has two nitrogen atoms and five oxygen atoms.

Summary & Key Takeaways

• Covalent molecular compounds have different naming rules from ionic compounds, which are typically composed of a metal and a non-metal.

• Prefixes are used to indicate the number of atoms for each element in the compound.

• The first element in a covalent molecular compound does not use the prefix "mono" if the subscript is one.