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Q.

The approximate size of an atom is

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a

$10^{- 6} m$

b

$10^{- 8} m$

c

$10^{- 10} m$

d

$10^{- 12} m$

answer is C.

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Detailed Solution

The approximate size of an atom is $1 A^{°} = 10^{- 8} cm or 10^{- 10} m$

The size of atom is first estimated by J.J.Thomson based on his plum pudding atomic model.

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