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Bond Order Calculator


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Bond order calculator helps you determine how strong a bond is between two atoms in a molecule. This helps users understand its molecular structure and predict their properties based on bond strength.

What is Bond Order?

In Chemistry,

“Bond order is the number of chemical bonds between a pair of atoms within a molecule”.

It is a measure of the strength of a chemical bond. The higher the bond order, the more electrons are being shared between the two atoms in the bond, and the stronger the bond is.


Let’s say you have two magnets. If you hold them close together, they will stick together with a certain amount of force. This is like a single bond. If you put another magnet between the first two magnets, they will stick together with even more force. This is like a double bond. And so on.

Bond Order Calculator

Bond Order Formula:

To calculate bond order, subtract the number of antibonding electrons from the number of bonding electrons and then divide by two. Such as:

$$ \text{Bond Order} = \dfrac{\text({Number of bonding electrons} - \text{Number of antibonding electrons})}{2} $$

How to Calculate Bond Order?

The fastest way to determine bond order is using the bond order calculator. But if you intend to calculate it on your own, stick to the following example.


Let’s say you want to find the bond order of the hydrogen molecule (H2).

First, we need to determine the number of bonding and antibonding electrons in hydrogen (H2).

Bonding electrons:

  • Each hydrogen atom has one valence electron.
  • When two hydrogen atoms bond together, they share their electrons.
  • This means that there are two bonding electrons in the hydrogen molecule.

Antibonding electrons:

  • There are no antibonding electrons in the hydrogen molecule.

Use the formula of bond order:

Bond Order = (Number of bonding electrons – Number of antibonding electrons) / 2

Now put the values into the equation:

Bond order = (2 bonding electrons – 0 antibonding electrons) / 2 = 1

Therefore, the bond order of H2 is 1.

This means there is 1 bond between the hydrogen atoms.

Bond Order for Various Elements:

Let’s have a look at this chart to get an idea about the bond orders for various elements!

Element Bond order Bonding electrons Antibonding electrons
Hydrogen 1 2 0
Nitrogen 3 6 0
Oxygen 2 4 4
Fluorine 1 2 0
Chlorine 1 2 0
Bromine 1 2 0
Iodine 1 2 0
Carbon 4 8 0
Silicon 4 8 0
Germanium 4 8 0
Tin 4 8 0
Lead 4 8 0
Beryllium 2 4 0
Magnesium 2 4 0
Calcium 2 4 0
Strontium 2 4 0
Barium 2 4 0
Aluminum 3 6 0
Gallium 3 6 0
Indium 3 6 0
Thallium 3 6 0


Which Chemical Bond is the Strongest?

The strongest chemical bond is the ionic bond. Ionic bonds are formed when one atom donates an electron to another atom, creating two oppositely charged ions. These ions are then attracted to each other by electrostatic forces, forming a very strong bond.

Here is a brief comparison of the different types of chemical bonds:

Bond type Strength Examples
Ionic Strongest NaCl, NaHCO3
Covalent Strong H2, CH4, H2O
Hydrogen Weakest Water, DNA, proteins

What is Nitrogen Lewis Dot Structure?

A Lewis dot structure is a diagram that shows the valence electrons of an atom or molecule. Nitrogen has 5 valence electrons, which are represented by 5 dots around the nitrogen symbol. 

The Lewis dot structure of nitrogen is as follows: :N:

The nitrogen atom has a partial negative charge because it has more valence electrons than it needs to fill its outer shell.

What is the Lewis Structure for N2?

The Lewis structure for N2 is: N≡N

This shows that the two nitrogen atoms are triple bonded, meaning that they share 6 electrons between them. The triple bond is very strong, which is why N2 is so stable.

References: Bond order, Examples, Bond order in molecular orbital theory

Alan Walker

Studies mathematics sciences, and Technology. Tech geek and a content writer. Wikipedia addict who wants to know everything. Loves traveling, nature, reading. Math and Technology have done their part, and now it's the time for us to get benefits.

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