Q28 / 160 · AP EAMCET 2006 · Chemistry

What is the correct order of occurrence (\% by weight) in air of $\mathrm{Ne}, \mathrm{Ar}$ and $\mathrm{Kr}$ ?

  • A
    $\mathrm{Ne}>\mathrm{Ar}>\mathrm{Kr}$
  • Correct answer
    B
    $\mathrm{Ar}>\mathrm{Ne}>\mathrm{Kr}$
  • C
    $\mathrm{Ar}>\mathrm{Kr}>\mathrm{Ne}$
  • D
    $\mathrm{Ne}>\mathrm{Kr}>\mathrm{Ar}$

Solution

The correct order of occurrence in air is $\mathrm{Ar}>\mathrm{Ne}>\mathrm{Kr}$

Hence, the correct answer is option: 'B'.

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