A nitrogen atom has a radius of 7.0 x 10-9 cm.Express the atomic radius as an ordinary number.
A) 0.000 000 000 070 cm
B) 0.000 000 000 70 cm
C) 0.000 000 007 0 cm
D) 0.000 000 070 cm
E) 0.000 000 70 cm
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