Question

A metallic element has a cubic lattice. Each edge of the unit cell is 2 Å. The density of the metal is $2.5c{m}^{-3}$ The unit cells in 200 g of metal are :

• A. $1\times {10}^{24}$
• B. $1\times {10}^{26}$
• C. $1\times {10}^{22}$
• D. $1\times {10}^{25}$

Answer 1

Answer: (D)

$1\times {10}^{25}$