I’m found in a group of my own, with a reactive nature that can’t be tamed. What am I if I have one valence electron?

Category: Science · Difficulty: hard

Hint: Think about the first group of the periodic table.

Answer

Alkali metal

Explanation

Alkali metals have one electron in their outer shell, making them highly reactive.

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

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