Who was the Greek philosopher introduced the idea of atom as the basic building block of matter? He gave them the name atomos.

The Greek philosopher who introduced the idea of atom as the basic building block of matter and gave them the name atomos was Democritus.

The Greek philosopher who introduced the idea of the atom as the basic building block of matter and gave them the name atomos was Democritus.

The Greek philosopher who introduced the idea of atoms as the basic building blocks of matter and gave them the name "atomos" was Democritus. He was born in Abdera, Thrace in the 5th century BCE. Democritus proposed that all matter is composed of tiny, indivisible particles called atoms. He believed that atoms were eternal, indivisible, and completely solid, and that they differed in their size, shape, and arrangement. Democritus' ideas on atoms were quite revolutionary for his time and laid the foundation for modern atomic theory.