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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.
Solution
Length of the given arrangement = 2.4 cm
Number of carbon atoms present = 2 × 108
∴ Diameter of carbon atom
`= (2.4xx10^(-2)" m")/(2xx10^8)`
`= 1.2 xx 10^(-10) " m"`
`:. "Radius of carbon atom" = "Diameter"/2`
`= (1.2 xx 10^(-10)" m")/2`
`= 6.0 xx 10^(-11) " m"`
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