Question

The radius of each atom of helium is r. What would be the excluded volume for an atom of helium which
touches other helium atoms in a vessel at high pressure and low temperature.
A) 4πr^3/3
B) 8πr^3/3
C) 16πr^3/3
D) 32πr^3/3​

Answer 1

Answer:

Given, b=[34πr3]×4N

24×10−3litres/mol=[34×3.1416×r3]×4×(6.023×1023)

r3=2.37×10−27dm3

r=1.355×10−9dm=1.355Ao

Hence, the radius of He atoms is 1.355Ao