What term is used to describe the number of protons in the nucleus of an atom, which defines the element?
Category: Science · Difficulty: hard
Hint: This number is unique for each element on the periodic table.
Answer
Atomic number
Explanation
The atomic number represents the number of protons in an atom's nucleus and identifies the element.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Atomic number.
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