An atom.
An element.
A particle is part of a element, and the element has particles in it. A particle is like a small tiny object and a element is stuff combined.
The smallest particle of an element is called an atom.
protons
This particle is the atom.
An atom is the smallest particle of an element that still has the chemical characteristics of that element
An atom of iron is the smallest particle of the element iron.
This particle is the atom.
An "element" is not a subatomic particle. Your question makes no sense and is therefore unanswerable.Another answer:Since an element is not a subatomic particle, the only answer can be a proton.
Hydrogen-1. It is a single proton and a single electron.
The simplest particle of an element is an atom. This is the form in which any element can be fully divided into without losing its properties.
The smallest particle of an element that has the properties of that element is called an atom.