A sodium atom has a radius of 0.000 000 018 6 cm.Express the atomic radius in scientific notation.
A) 1.86 x 10-9 cm
B) 1.86 x 10-8 cm
C) 1.86 x 10-7 cm
D) 1.86 x 107 cm
E) 1.86 x 108 cm
Correct Answer:
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