Mass of an electron is 9.0xx10^(-31) kg....

Mass of an electron is `9.0xx10^(-31) kg`. It revolves around the nucleus of an atom in a circular orbit of radius `4.0 Å` with a speed of `6.0 xx10^(6) ms^(-1)`. Calculate the angular momentum of the electron.

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The correct Answer is:

`2.16xx10^(-33) kg m^(2) s^(-1)`

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