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What is the approximate lattice constant “a” of a substance having FCC lattice, molecular weight 60.2 and density 6250 kg/m3 ? (Consider N = 6.02 x 1026 /kg-mole) 

Correct answer is '4'. Can you explain this answer?
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FCC lattice (4R = 2 a) (n = 4) Atomic weight AW = 60.2 g/mol density r = 6250 kg/m3 = 6.25 g/cm3 N = 6.02 × 1026/kg-mole = 6.02 × 1023/mole Volume of FCC = V = a3 Theoretical density r = A Volume n A N W = . . 6 02 10 a 4 60 2 23 3 = 6.25 a3 = 64 × 10-24 cm3 a = 4 ×10-8 cm
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What is the approximate lattice constant “a” of a substanc...
The lattice constant refers to the distance between the repeating units (atoms, ions, molecules) in a crystal lattice structure. The value of the lattice constant can vary depending on the specific crystal structure and material.

Without specifying a particular crystal or material, it is not possible to provide an approximate lattice constant.
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What is the approximate lattice constant “a” of a substance having FCC lattice, molecular weight 60.2 and density 6250 kg/m3 ? (Consider N = 6.02 x 1026 /kg-mole)Correct answer is '4'. Can you explain this answer?
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