What is the atomic radius of xenon

Asked by maham237 @ 05/01/2021 in Chemistry viewed by 302 People

The radius of a xenon atom is 1.3×10−8cm. a 100-ml flask is filled with xe at a pressure of 1.2 atm and a temperature of 281 k . part a calculate the fraction of the volume that is occupied by xe atoms. (hint: the atoms are spheres.)

Answered by maham237 @ 05/01/2021

Radius of Xenon = 1.3Ă—10â’8 cm
Volume = 100 ml = 0.1 L
Pressure P = 1.2 atm = 121.59 Kpa
Temperature = 281 K
R = Gas Constant = 8.31 J mol^-1 K^-1
Now find the number of atoms
PV = nRT => n = PV / RT
n = (121.59 x 0.1) / (8.31 x 281) = / 2335.11 = 0.0052
Number of atoms in a mole is same as Avogadro constant A, which is 6.02 x
10^23 particles.
n = number of atoms= 0.0052
N = number of particles
Avogadro constant A = 6.02 x 10^23
n = N/A => N = n x A = 0.0052 x 6.02 x 106^23 = 3.13 x 10^20
Volume of Xe atom which would be a sphere = (4/3) x pi x r^3
Volume = = (4/3) x 3.14 x (1.3Ă—10â’8)^3 = 9.2 x 10^-24
Volume occupied by these particles = n x Volume = 3.13 x 10^20 x 9.2 x
10^-24 = 0.00288
Fraction of volume will be = 0.00288 / 0.1 = 0.0288

8) rubidium [kr]5s has an atomic radius of 248pm. tin, another period 5 element, has an atomic radius of 140pm. what would the correct atomic radius for xenon be? xenon is also in period 5 and a noble gas. 1

Asked by maham237 @ 10/01/2021 in Chemistry viewed by 356 persons

What is the atomic radius of xenon

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8) rubidium [kr]5s has an atomic radius of 248pm. tin, another period 5 element, has an atomic radius of 140pm. what would the correct atomic radius for xenon be? xenon is also in period 5 and a noble gas. 1

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