Question

$2\times {10}^8$ atom of carbon are arranged side by side. Calculate the radius of carbon atom if the length of this arrangement is 2.4 cm.

• A. 0.58 nm
• B. 0.060 nm
• C. 0.369 pm
• D. none of these

Answer 1

Answer: (B)

0.060 nm

Total length $=2.4$ $cm$

No. of $C$ atoms $=2\times {10}^8$

Diameter $=\frac{2.4}{2\times {10}^8}=1.2\times {10}^{-8}$ $cm=1.2\times {10}^{-10}$ $m$

Radius $=\frac{1.2\times {10}^{-10}}{2}=0.6\times {10}^{-10}$ $m=0.06\times {10}^{-10}$ $m=0.06$ $nm$