In an alloy, atom A form fcc structure, atom B is present in alternate tetrahedral voids and atom C is present in all octahedral voids. If radius of A and C are same and equals to 1 Å and atomic mass

Question

In an alloy, atom A form fcc structure, atom B is present in alternate tetrahedral voids and atom C is present in all octahedral voids. If radius of A and C are same and equals to 1 Å and atomic mass of A , B and C are 30 amu, 10 amu and 20 amu respectively then, select the incorrect statements-

TestHub · Accepted Answer

P.F. = 3 4 ​ π [ a 3 4 r A 3 ​ + 4 r B 3 ​ + 4 r C 3 ​ ​ ] ​ = 3 4 ​ π [ ( 4 ) 3 4 ( 1 ) 3 + 4 ( 1 ) 3 + 4 ( 3 ​ − 1 ) 3 ​ ] ​ ​ ​ ​ \displaylines P . E . = 6 3 3 ​ − 4 ​ d = 4 3 4 × 30 + 4 × 10 + 4 × 20 ​ = 4 15 ​ amu / A 3

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