Overview
Engineering reference data for Naming Rule Covalent Ionic Binary Compound Salt in chemistry.
Key Formulas
Ideal Gas Law
Pressure × Volume = moles × gas constant × temperature.
Molarity
Moles of solute per liter of solution.
pH
Measure of acidity.
Variables
| Symbol | Description | Unit |
|---|---|---|
| Pressure | Pa | |
| Volume | m³ | |
| Moles | mol | |
| Gas constant | 8.314 J/(mol·K) |
Naming Rules for Binary Compounds
Ionic Compounds
Binary ionic compounds contain a positive ion (cation) and a negative ion (anion). The cation is typically a metal and is always written first in both the formula and the name.
Basic Rules:
- The cation is always named first and the anion second
- A cation takes its name from the name of the element (e.g., K⁺ → potassium)
- An anion is named by taking the first part of the element name and adding -ide (e.g., Br⁻ → bromide)
Oxyanion Naming Conventions
For oxyanion series (polyatomic ions with varying numbers of oxygen atoms):
| Series Length | Naming Pattern |
|---|---|
| Two members | Smaller O count → -ite, Larger O count → -ate |
| More than two | Fewest O → hypo-...-ite, Most O → per-...-ate |
Monatomic Ions Reference
Polyatomic Ions Reference
Type I Binary Ionic Compounds
Type I compounds contain a metal that forms only one type of cation (e.g., Na⁺, Ca²⁺).
Type II Binary Ionic Compounds
Type II compounds contain metals that can form more than one type of cation. The charge is specified using Roman numerals in parentheses.
Binary Covalent Compounds
Covalent compounds contain two nonmetals. Naming follows these rules:
- First element uses the full name
- Second element is named as an anion (with -ide suffix)
- Prefixes indicate atom count: mono- (1), di- (2), tri- (3), tetra- (4), penta- (5), hexa- (6), hepta- (7), octa- (8)
- The prefix mono- is never used for the first element
- When oxygen follows a vowel-ending prefix, the vowel is dropped (e.g., monoxide, tetroxide, pentoxide)