Carbon chemistry
Element — মৌল
Quick answer
A pure substance made of just one kind of atom; 118 elements are known, and no chemical reaction can split one further.
Definition
An element is a pure substance made of only one kind of atom, meaning every atom has the same atomic number. There are about 118 known elements; 92 of them occur naturally on Earth, the rest born in laboratories. Elements cannot be broken into simpler substances by chemical means. Hydrogen, carbon, oxygen and iron are elements; everything in the universe is built from this limited set of letters, arranged in endlessly different ways.
For example
The gold in a jeweller's shop at Tanti Bazar is the element gold, made of gold atoms alone; the oxygen you are breathing is the element oxygen.