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# Solve this following

Question:

At $100^{\circ} \mathrm{C}$, copper $(\mathrm{Cu})$ has $\mathrm{FCC}$ unit cell structure with cell edge length of $x \AA$. What is the approximate density of $\mathrm{Cu}\left(\right.$ in $\mathrm{g} \mathrm{cm}^{-3}$ ) at this temperature ?

[Atomic Mass of Cu $=63.55 \mathrm{u}$ ]

1. $\frac{105}{x^{3}}$

2. $\frac{211}{x^{3}}$

3. $\frac{205}{x^{3}}$

4. $\frac{422}{x^{3}}$

Correct Option: , 4

Solution:

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