Question

Which is the simplest form of matter or an atom or an element?

Answer 1

the simplest form of matter is atom but it is not compulsory that atom can be freely available in the nature but element is the simplest form of matter which is freely present in nature

Answer 2

An ELEMENT is the simplest form of matter which can not be changed further by chemical or physical methods. An ATOM is the simplest form of an element. The simplest form of some elements is a MOLECULE. When an element consists of two identical atoms it is called a diatomic molecule.