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An electron of mass 9 xx 10^(-31) kg rev...

An electron of mass `9 xx 10^(-31)` kg revolves in a circle of radius 0.53 Å around the nucleus of hydrogen with a velocity of `2.2 xx 10^(6) "ms"^(-1)`. Show that its angular momentum is equal to `h//2pi`, where `h` is Plank's constant of value `6.6 xx 10^(-34) Js`.

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