Braingle Lite


Doesn't Belong V

Category:Group
Submitted By:tigerlily34
Fun:** (1.82)
Difficulty:* (1.04)



Which of the following words doesn't belong:

HELIUM, ARGON, CALCIUM, NEON, RADON

Answer:

CALCIUM doesn't belong; it is an alkaline earth metal, while the others listed are noble gases.

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