What Are Binary Compounds Definition Types Naming Rules and Examples
It is vital to have basic knowledge of the compounds as well as chemicals as it is important for our safety. Many chemicals that we observe daily can be very reactive and should be handled carefully. Chemistry helps us to understand which of the chemical compounds can be harmful and which compounds are safe. Here we will have a brief look at the binary compounds and the different aspects associated with them.
The binary compounds are those compounds that contain exactly two types of different elements. The word binary is derived from Bi, which essentially means two. These compounds tend to show strong chemical bonds like ionic, metallic, and covalent.
The List of the Binary Ionic Compounds
The significance of the binary compounds was elevated to a new level after the ionic compounds were discovered. Most ionic compounds in the periodic table are essentially two-element compounds, where one of the compounds is non-metal and the other compound is metal. The binary ionic compounds tend to start from two compounds but they can be incredibly complex in terms of their properties and they can form polyatomic ionic compounds. The list of some of the binary ionic compounds is as follows: NaCl, Li3N, and MgO.
Difference between Binary Acids and Binary Compounds
A lot of students get confused when the question asks them to name binary acids. First, we need to clear out the definition of binary acids; well, it will be much easier if we take an example. Let’s look at three compounds, mainly hydriodic acid, hydrofluoric acid, and hydrobromic acid. Now here you noticed one thing.
All the compounds have one element in common, and that is your hydrogen atom. Still, on the other hand, all the remaining three compounds are non-metal, these are iodine, fluorine, and bromine, which makes them binary acids. These acids have one hydrogen element and a nonmetal element. All three compounds that we have written in the example are bonded together, a hydrogen element from a non-metal.
The other difference between binary acids and binary compounds is that the strength of binary acids depends on the bond between the hydrogen atom and the other given element. The weaker is the bond; the stronger will be the acid.
Each binary acid that we have in chemistry starts with the prefix “hydro,” followed by the name of other elements, and in the postfix, we add “-ic.” Thus, if you have a binary acid from two given elements, Hydrogen, and chlorine, then you will name that acid as hydro+chlo+ric acid.
The Naming of Binary Compounds
Naming the compound in chemistry is an important requirement. Here are some of the steps that you need to follow for naming the binary compound. First, there is a cation, and after that comes anion in the order. When we are using the cation having a fixed oxidation state, we take the name directly from the periodic table. The anion name will come up by the root of the element’s name having an addition of the suffix “-ide”.
The Examples of the Binary Compounds
Now we will try naming the binary compounds with the help of some examples. All of these examples consist of only one charge, and it has the inclusion of both cation as well as anion within the given formula.
Example: Writing the name of the formula KCI.
The 1st part of the name comes from the 1st element within the given formula. So for instance “K” is the chemical symbol of potassium. The postfix is the root of 1st name of the 2nd symbol that is “CI” and the element name is Chloride. Now we can add the postfix after having taken the root from the 2nd symbol by adding “-ide” and here we have the complete name. So, as a result, we get KCl which is read as Potassium Chloride.
FAQs on Binary Compounds in Chemistry Complete Guide
1. What is a binary compound in chemistry?
A binary compound is a chemical compound made of exactly two different elements chemically combined in a fixed ratio. Binary compounds can be:
- Ionic compounds (metal + nonmetal), such as NaCl
- Covalent compounds (nonmetal + nonmetal), such as CO2
2. What are the types of binary compounds?
The main types of binary compounds are ionic and covalent compounds.
- Binary ionic compounds: formed between a metal and a nonmetal, e.g., MgO
- Binary covalent (molecular) compounds: formed between two nonmetals, e.g., SO2
- Binary acids: hydrogen combined with a nonmetal in aqueous solution, e.g., HCl(aq)
3. How do you name a binary ionic compound?
To name a binary ionic compound, write the metal name first and change the nonmetal ending to “-ide.”
- Step 1: Write the cation (metal) name, e.g., sodium.
- Step 2: Write the anion (nonmetal) root + -ide, e.g., chloride.
- Example: NaCl is sodium chloride.
- If the metal has multiple oxidation states, use Roman numerals, e.g., FeCl2 is iron(II) chloride.
4. How do you name a binary covalent compound?
A binary covalent compound is named using Greek prefixes to show the number of atoms of each element.
- Use prefixes like mono-, di-, tri-, tetra-, etc.
- The second element always ends in -ide.
- Example: CO is carbon monoxide.
- Example: N2O4 is dinitrogen tetroxide.
5. What is the difference between binary ionic and binary covalent compounds?
The key difference is that binary ionic compounds involve electron transfer, while binary covalent compounds involve electron sharing.
- Ionic: metal + nonmetal, form ions, high melting points, e.g., KBr
- Covalent: nonmetal + nonmetal, share electrons, lower melting points, e.g., CH4
6. What is a binary acid?
A binary acid is an acid composed of hydrogen and one other nonmetal element in aqueous solution.
- General formula: HX(aq)
- Example: HCl(aq) is hydrochloric acid.
- Named using: “hydro-” + nonmetal root + “-ic acid.”
7. How do you write the formula of a binary ionic compound?
To write a binary ionic compound formula, balance the positive and negative charges so the total charge is zero.
- Step 1: Write the ion symbols with charges, e.g., Na+ and O2-.
- Step 2: Cross the charges to balance.
- Step 3: Simplify if needed.
- Example: Na+ and O2- form Na2O.
8. Can you give examples of common binary compounds?
Common binary compounds include both ionic and covalent examples found in everyday chemistry.
- NaCl – sodium chloride (ionic)
- MgO – magnesium oxide (ionic)
- CO2 – carbon dioxide (covalent)
- NH3 – ammonia (covalent)
- HCl(aq) – hydrochloric acid (binary acid)
9. How are binary compounds formed?
Binary compounds are formed when two different elements chemically react and bond to achieve stable electron configurations.
- Ionic formation: electron transfer, e.g., 2Na(s) + Cl2(g) → 2NaCl(s)
- Covalent formation: electron sharing, e.g., H2(g) + Cl2(g) → 2HCl(g)
10. What are common mistakes when naming binary compounds?
Common mistakes when naming binary compounds include incorrect suffixes, missing prefixes, and ignoring oxidation states.
- Not changing the second element to -ide (e.g., writing sodium chlorine instead of sodium chloride)
- Forgetting Roman numerals for variable-charge metals (e.g., iron(III) chloride for FeCl3)
- Omitting prefixes in covalent compounds (e.g., carbon dioxide for CO2)
