Question

What is mean by atom difine

Answer 1

An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms....

Answer 2

Atoms are incredibly small particles that make up everything in the universe. As far as we know, there are 118 different elements; around 92 that occur naturally and another 26 that scientists have created in laboratories (although this number fluctuates as scientists discover and create new elements). Each element is comprised of atoms that are unique to that element; hydrogen atoms are different from gold atoms, which are different from neon atoms.