What is the octet rule in chemistry?

What is the octet rule in chemistry?

The octet rule states that atoms tend to bond in such a way that they have eight electrons in their valence shell, achieving a stable electron configuration.

Why is the octet rule important?

It's important because it helps explain how and why atoms combine to form molecules, influencing chemical reactivity and stability.

Can you give me an example of the octet rule in action?

Sure! A classic example is sodium (Na) and chlorine (Cl) combining to form sodium chloride (NaCl). Sodium donates one electron to chlorine, allowing both to achieve a full outer shell.

Are there exceptions to the octet rule?

Yes, there are exceptions! Some elements, like hydrogen and helium, are stable with fewer than eight electrons, while others, like phosphorus and sulfur, can expand their octet.