Chemistry
Grade-9
Easy

Question

How many elements are in the Noble Gas family are man-made?

  1. 3
  2. 2
  3. 1
  4. 0

Hint:

Six noble gases are naturally occuring.

The correct answer is: 1


    • There are 7 elements in noble gas family.
    • Six noble gases are naturally occurring helium, neon, argon, xenon, krypton and radon. Radon is highly reactive.
    • Oganesson is man made noble gas. 

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