How many chemical elements are there in total?

As of now, there are 118 officially recognized chemical elements that complete the first seven rows of the periodic table.

What is the first element?

The first element is Hydrogen (H), which holds the atomic number 1. It has just one proton in its nucleus, making it the simplest and lightest of all elements.

What is the last element?

The last known element is Oganesson (Og), with atomic number 118. It is a synthetic, superheavy element created in a laboratory and is extremely unstable.

Chemical Elements with Atomic Mass

Explore the building blocks of the universe. A comprehensive list of all 118 chemical elements — atomic number, symbol, category, and atomic mass. Perfect for NEET, JEE, and CBSE students.

Chemical Elements Parameters

Atomic No.	Element Name	Sym.	Category	Atomic Mass (u)

Chemical Elements Parameters

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