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The ratio for the speed of the electron in the 3rd orbit of He+ to the speed of the electron in the 3rd orbit of hydrogen atom will be:

Option 1 -

1 : 1

Option 2 -

1 : 2

Option 3 -

4 : 1

Option 4 -

2 : 1

0 2 Views | Posted 4 weeks ago
Asked by Shiksha User

  • 1 Answer

  • R

    Answered by

    Raj Pandey | Contributor-Level 9

    4 weeks ago
    Correct Option - 4


    Detailed Solution:

    v ∝ z n  

                  v = k z n   [K ® constant]

                  for 3rd orbit of He+

                  v H e + = k × 2 3 = 2 k 3               - (1)

                  v H = k × 1 3 = k 3                    - (2)

                  v H e + v H = 2 : 1  

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