1.

If metallic atoms of mass 197 and radius 166 pm are arranged in ABCABC fashion then what is the surface area of each unit cell?

A. 1.32 10<sup>6</sup> pm<sup>2</sup>
B. 1.32 10<sup>-18</sup>pm<sup>2</sup>
C. 2.20 10<sup>5</sup> pm<sup>2</sup>
D. 2.20 10<sup>-19</sup> pm<sup>2</sup>
Answer» B. 1.32 10<sup>-18</sup>pm<sup>2</sup>


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