Sawaal
5
Q:

What is the heaviest noble gas?

A) krypton B) radon
C) helium D) xenon

Answer:   B) radon



Explanation:

The seven elements — helium, neon, argon, krypton, xenon, radon, and oganesson of Group 18 of the periodic table are Noble or Inert gases.

 

Radon is the heaviest and Helium is the lightest gases of the noble gases.

Subject: Chemistry
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