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The number of waves fitting into the 3rd excited state of H, $H e^{+}$ and $L i^{2 +}$ are, respectively :

3,6 and 9
4 in each case
3,2 and 1
3 in each case

3 in each case

3,6 and 9

4 in each case

3,2 and 1

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Solution

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The number of waves fitting into the ground state, 1st, 2nd and 3rd excited state of H are 1,2,3 and 4 respectively.
The number of waves fitting into the 3rd excited state of $H, H e^{+}$ and $L i^{2 +}$ are, respectively 4 each.

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