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An element cyrstallises in a structure h...

An element cyrstallises in a structure having a fcc unit cell of and edge 200 pm. Calculate its density if 200 g of this element contains `24xx 10^(23)` atoms.

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The correct Answer is:
41.67 g`cm^(-3)`
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An element cyrstallizes in a structure having F.C.C. unit cell of an edge 200pm. Calculate the density if 200gm of it contains 24xx10^(23) atoms

An element crystallises in fcc lattice with cell edge of 400 pm. Calculate its density if 250 g of this element contain 2.5 xx 10^(24) atoms.

Density of a unit cell is same as the density of the substance. If the density of the substance is known, number of atoms or dimensions of the unit cell can be calculated . The density of the unit cell is related to its mass(M), no. of atoms per unit cell (Z), edge length (a in cm) and Avogadro number N_A as : rho = (Z xx M)/(a^3 xx N_A) An element crystallizes in a structure having a fcc unit-cell an edge 100 pm. If 24 g of the element contains 24 xx 10^(23) atoms, the density is

An element crystallizes in a f.c.c. lattice with cell edge of 250 pm. Calculate the density if 300 g of this element contain 2 xx 10^(24) atoms.

MOTION-SOLID STATE-Exercise - 3
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  5. A crystal of lead (II) sulphide has NaCl structure. In this crystal th...

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  12. Calculate the value of Avogadro's number from the following data: De...

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  13. KCl crystallizes in the same type of lattice as does NaCl. Given tha...

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  14. An element A (Atomic weight =100 ) having b.c.c. structures has unit c...

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  15. The composition of a sample of wustite is Fe(0.93)O(1.00) What percent...

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  16. BaTiO3 crystallizes in the prevoskite structure. This structure may be...

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  17. Rbl crystallizes in bcc structure in which each Rb^(+) is surrounded b...

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  18. If NaCl is doped with 10^(-3) mol% SrCl(2), what is the concentration ...

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  19. Find the size of largest sphere that will fit in octahedral void in an...

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  20. NaH crystallizes in the same structure as that of NaCl. The edge lengt...

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