Multiple choice

Which of the following is chemically inert?

  1. Gallium

  2. Indium

  3. Neon

  4. Actinium
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The noble gases, including helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe), and radon (Rn)  are considered  as inert .These elements are unreactive because they are very stable in their naturally occurring forms. Neon has eight electrons in its outermost level and is stable so it is chemically inert & does not form any compound.  

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