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Electromagnetic radiation and spectra

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Question

2 x I08 atoms of carbon are arranged side by side. Calculate the radius of carbon atom, if the length of this arrangement is 2.4 cm.

Moderate
Solution

Let the radius of carbon atom = be r
 Then,   diameter =2r
 Number of atoms =2×108  Total length formed =2.4cm  2r×2×108=2.4  r=2.44×108=6×109Cm =6×1011m =60×1012m=60pm


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