Which of the following noble gases is commonly found in the atmosphere?
-
A.
Xenon -
B.
Neon -
C.
Helium -
D.
Argon
Correct Answer: Option D
Explanation
Argon, with the symbol Ar which is the third noble gas, in group 18 makes up about 1% of the Earth’s atmosphere, making it the most common noble gas on Earth.