The smallest, electrically neutral assemblage of energy and matter that we know exists in the universe. it consists of a nucleus surrounded by a cloud of electrons is: an atom
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
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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