The term used to describe smallest possible element in computer memory is byte. Some people may say bit. But logically, that's incorrect. Each character is represented by 8 bits or 1 byte. In Unicode it is represented by 16 bits or 2 bytes.
An element is a class of substances An atom is the smallest possible piece of an element. An isotope is an electrically charged atom.
For a substance the term is molecule, for an element the term is atom.
The smallest quantity of an element is an atom.
a quark or if you mean the smallest element hydrogen
the smallest element is hydrogen of which its valency is one.
ATOM
An atom is a smallest particle of an element. The subatomic particles are electrons, protons and neutrons
The atom is the smallest unit of an element that has all the properties of the element.
The smallest identifiable unit of an element that retains the properties of the element is an atom.
The smallest particle of an element is called an atom.
An atom is the smallest particle that is still recognisably the element
a pixel is the smallest element in an electronic image