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Textbook Expert
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23 Nov 2021

Given information

Densities and atomic radii of the noble gases are as given:

ELEMENT ATOMIC RADIUS (pm)

DENSITY (g/L)

He 32 0.18
Ne 70 0.90
Ar 98 -
Kr 112 3.75
Xe 130 -
Rn - 9.73

Step-by-step explanation

Step 1.

The volume occupied by one mole of gases of given density is as follows:

              

 

The Molar Mass of Helium is .

The density of Helium gas is .

 

Using the values of mass and density of Helium volume can be calculated as,

                 

 

Density can be calculated as follows:

             

 

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