The noble gas that does not occur in the atmosphere is-JEE MAINS 2019

Helium is present in the atmosphere at 5.24 ppm concentration. nbsp; Neon is present in the atmosphere at 18.2 ppm in concentration. nbsp; Krypton is presen ...

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Standard IX

Chemistry

Molecules and Atomicity

The noble gas...

Question

The noble gas that does not occur in the atmosphere is:

 JEE MAINS 2019

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Solution

Helium is present in the atmosphere at 5.24 ppm concentration.
Neon is present in the atmosphere at 18.2 ppm in concentration.
Krypton is present in the atmosphere at 0.087 ppm in concentration.
First of all radium is not a noble gas and it is not available in nature. So, option d is correct.

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The noble gas that does not occur in the atmosphere is:  JEE MAINS 2019

Helium is present in the atmosphere at 5.24 ppm concentration. Neon is present in the atmosphere at 18.2 ppm in concentration. Krypton is present in the atmosphere at 0.087 ppm in concentration. First of all radium is not a noble gas and it is not available in nature. So, option d is correct.

The noble gas that does not occur in the atmosphere is:

 JEE MAINS 2019

Helium is present in the atmosphere at 5.24 ppm concentration.
Neon is present in the atmosphere at 18.2 ppm in concentration.
Krypton is present in the atmosphere at 0.087 ppm in concentration.
First of all radium is not a noble gas and it is not available in nature. So, option d is correct.