Chemistry
Grade-9
Easy
Question
How many elements are in the Noble Gas family are man-made?
- 3
- 2
- 1
- 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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