> For the complete documentation index, see [llms.txt](https://knowmayus.gitbook.io/chemistry/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowmayus.gitbook.io/chemistry/structure/2.2-covalent-model/2.2.2-bond-order.md).

# 2.2.2 Bond order

Hydrogen contains a **single bond**.

Oxygen molecules contain a **double**-**bond.**

Diatomic Nitrogen contains a **triple**-**bond.**

<figure><img src="https://1345459981-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FU8XLVR7CYYLRlgazrP2A%2Fuploads%2FGa0KPrOTH3Zx6gr8ts5V%2Fimage.png?alt=media&amp;token=4211a2a7-ed52-4fea-9171-2968da6326da" alt=""><figcaption></figcaption></figure>

The number of bonds between two atoms is known as the **bond order.** The more strength a bond has, the closer they are packed, thus the length decreases.&#x20;

$$Strength \propto \frac{1}{length}$$

**Bond strength** and **Bond length** can be quanified. The stronger the bond, the larger the bond entalphy.

**Bond length** = the average distance between two bonded neclei.

<figure><img src="https://1345459981-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FU8XLVR7CYYLRlgazrP2A%2Fuploads%2FDhOSnA90WHX6dnt7G8dM%2Fimage.png?alt=media&amp;token=4e996c06-dab8-485a-9623-e9244edb5ca5" alt=""><figcaption></figcaption></figure>