Question 2.36 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.
Class XI Structure of Atom Page 67
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concept : calculate diameter with help of formula

now, here,
total length = 2.4 cm = 0.024 m
number of atoms = 2 × 10^8 atoms
diameter = 0.024/2 × 10^8 = 1.2 × 10^-10 m
but we know,
diameter = 2 × radius
so, radius = 1.2/2 × 10^-10 m = 6 × 10^-11 m
now, here,
total length = 2.4 cm = 0.024 m
number of atoms = 2 × 10^8 atoms
diameter = 0.024/2 × 10^8 = 1.2 × 10^-10 m
but we know,
diameter = 2 × radius
so, radius = 1.2/2 × 10^-10 m = 6 × 10^-11 m
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