Calcium Oxide Has a Face Centered Cubic Unit Cell of Oxide

question 50

Multiple Choice

Calcium oxide has a face centered cubic unit cell of oxide ions with the calcium in octahedral holes.If the radius of Ca²⁺ is 106 pm and the density of CaO is 3.34 g/cm³,what is the radius of the oxide ion? (100 cm = 1 $\times$ 10¹² pm)

• A) 160 pm
• B) 120 pm
• C) 106 pm
• D) 135 pm
• E) 269 pm

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Definitions:

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Tubular Secretion

A biological process within the nephrons of the kidneys where substances are secreted from the blood into the tubular fluid to be eliminated in urine.

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