Mass defect for the isotope thorium-234 = 1.85864 amu.

How many kilograms does the mass defect represent?

A) 1.85864 * 10-10 kg

B) 1.12 * 10 - 22 kg

C) 3.09 * 10-27 kg

D) 1.66 x 10-27 kg

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