What structure consists of protons and neutrons at its core, surrounded by a cloud of electrons, defining an element's properties?

Category: Science · Difficulty: hard

Hint: It’s the smallest unit of an element.

Answer

Atom

Explanation

An atom is the basic unit of a chemical element, composed of a nucleus and electrons, determining the element's characteristics.

This is a hard science riddle — a tricky one that takes a little thought. The answer is Atom.

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