Argon crystallizes in FCC arrangement and density of solid and liquid argon is 3/7 and 3gm/cc respectively. Find percentage of empty space in liquid Ar.A. 17B. 34C. 68D. 82

Argon crystallizes in FCC arrangement and density of solid and liquid

1.	Argon crystallizes in FCC arrangement and density of solid and liquid argon is 3/7 and 3gm/cc respectively. Find percentage of empty space in liquid Ar.A. 17B. 34C. 68D. 82
Answer» Correct Answer - B First method Let the volume of sloid Ar=100mL. Mass of solid Ar= `Vxxrho=100xx1.59gcm^(-3)=159g` Volume of liquid Ar= `("Mass")/(rho)=(159g)/(1.42gcm^(-3))=112mL` Since Ar crystallizes in fcc-type lattice, the packing fraction (PF)=0.74 Actual volume occupie by Ar=PF xx Volume of solid Ar=`0.74xx100=74mL` % Empty space in liquid Ar= `((112-74))/(112)=33.92%`

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Argon crystallizes in FCC arrangement and density of solid and liquid argon is 3/7 and 3gm/cc respectively. Find percentage of empty space in liquid Ar.A. 17B. 34C. 68D. 82

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