ChemistryRadius of the first orbit of the electron in a hydrogen atom is 0.53 A° . So, the radius of the third orbit will be.

Radius of the first orbit of the electron in a hydrogen atom is 0.53 A° . So, the radius of the third orbit will be.

  1. A

    2.12 Å

  2. B

    4.77 Å

  3. C

    1.06 Å

  4. D

    1.59 Å

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    Solution:

    rn2Z

    r=0.529×n2

    =0.53×32

    =0.53×9

    =4.77Ao

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