What is the angular momentum of an electron in the third orbit of an atom? (Given h = 6.6 × 10-34 joule second)

1
3.15 × 1034 joule second
2
6.30 × 10-34 joule second
3
3.15 × 10-34 joule second
4
6.30 × 1034 joule second

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