Determine the Radius of an Al Atom (In Pm) If $2 \sqrt{2} r$

question 84

Multiple Choice

Determine the radius of an Al atom (in pm) if the density of aluminum is 2.71 g cm^-3. Aluminum crystallizes in a face-centred cubic structure with an edge length of $2 \sqrt{2} r$ .

• A) 143 pm
• B) 227 pm
• C) 96 pm
• D) 172 pm
• E) 193 pm

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