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Which of the following statements is false?

1. (a) Radon is obtained from the decay of radium
2. (b) Helium is inert gas
3. (c) Xenon is the most reactive among the rare gases
4. (d) The most abundant rare gas found in the atmosphere is argon

Correct answer: (b) Helium is inert gas

Solution

Option (b) is false because helium is not completely inert; it is chemically unreactive under normal conditions but can form compounds under extreme conditions. The other statements are correct.

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