SELECT * FROM question_mgmt as q WHERE id=1285 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=2 AND subId=9 AND chapterId=43 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

Question:

2 × 108 atoms of carbon are arranged side by side. Calculate the radius of carbon atom if the length of this arrangement is 2.4 cm.

Answer:

Total Length = 2.4 cm

Total number of atoms along the length = 2 × 108

Therefore diameter of each atom = 2.4 / (2 × 108)

= 1.2 x 10-8 cm

And radius of the atom = (1.2 x 10-8) / 2

= 0.60 x 10-8cm

= 0.060 x 10-9m

= 0.060nm


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