Let's talk naming binary molecular compounds | BASIC CHEM 101 | Check notes in the description
Channel: The GeltonNation
Date: 2020-09-06

Naming Binary Molecular Compounds
- We’re done with Ionic Compounds, now we’re doing molecular compounds
- Molecular compounds are usually made up of a non-metal and a non-metal or a metalloid and a non-metal
- a binary compound is a compound made up only 2 elements. 
- When naming binary molecular compounds, a prefix system is used (mono, di, tri, tetra….)
- When dealing with binary molecular compounds you have to know which element should come first. To do that, there’s an order that is followed. – Fluorine is last and Oxygen is second last. However, the priority decreases across the period and increases down the group. Hydrogen falls between group 5 and group 6. 
-  Check the video to see how the order goes
Rules of Naming Binary Molecular Compounds
1. If given a formula, naming follows of the given elements. 
2. The first element is named as is.
3.  The second element is named with the suffix “ide” as if it occurred as an anion
4. To each name, add the prefix to denote the subscript written in the formula. 
5. The subscript 1 is usually not written and mono is usually not used to denote the subscript. However, same elements can sometimes form more than one compounds, as such the prefix mono can be used. E.g. CO and CO2 are compounds of the same elements. These can be names as Carbon Monoxide and Carbon dioxide respectively. 
6. In a case a prefix ends with a vowel and the element starts with a vowel, the vowel from the prefix is usually dropped. E.g. pentaoxide becomes pentoxide. 
There are well established names or common names for certain compounds which you must learn. 
Also learn oxoacids which are usually formed by polyatomic ions. Polyatomic ions ending with “ate” usually form acids ending with “ic” and polyatomic ions ending with “ite” for “ous” acids
Carbonate ion – Carbonic acid
Nitrite Ion – Nitrous acid

You can also support us on other platforms for different content: https://www.linktr.ee/Geltonated