A Certain Solid Metallic Element Has a Density 7

question 21

Multiple Choice

A certain solid metallic element has a density 7.87 g/cm³ and a molar mass of 55.85 g/mol. It crystallizes with a cubic unit cell, with an edge length of 286.7 pm. Calculate the number of atoms per unit cell.

• A)1
• B)2
• C)3
• D)4
• E)6

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