The smallest unit of an element that still retains the distinctive behavior of that element is an: atom
A single atom of an element keep its distinctive behavior, that's because the atom is the smallest unit of the composition of a chemical element.
The atoms were created after the Big Bang about 13.7 billion years ago. And they were discovered in the 1800's by John Dalton, who speculate that all atoms of an element are identical in size and mass.
What is an atom?
The atom is the smallest part of the composition of matter, it is indivisible and is composed of a nucleus that has protons and neutrons, and around the nucleus there are the electrons.
Learn more about the atom at: brainly.com/question/17545314
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