Multiple choice

Nobel gases are also called

  1. good gases

  2. rare gases

  3. highly reactive

  4. explosive gases

  5. none of these

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Nobel gases are also called as rare gases. A noble gas is an element with its outer electron shell completely filled. He, Ne, Ar, Kr, Xe, and Rn all have their outer p orbitals filled thus making them either totally or very unreactive. They are sometimes referred to as the inert gases too.

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