Hydrogen atom has an approximate diameter of:

10^{- 9} m

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10^{- 10} m

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9^{- 10} m

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10^{- 11} m

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Solution

The correct option is B $10^{- 10} m$
A hydrogen atom has a diameter of approximately $1.06 \times 10^{- 10} m \approx 10^{- 10} m$ , as defined by the diameter of the spherical electron cloud around the nucleus.

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