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Which state of triply ionised Beryllium ...

Which state of triply ionised Beryllium `(Be^(+++))` the same orbital radius as that of the ground state hydrogen ?

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Which state of the triply ionized Be^(+++) has the same orbital radius as that of the ground state of hydrogen? Compare the energies of two states.

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GRB PUBLICATION-ATOMIC STRUCTURE-Subjective Type
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  3. Which state of triply ionised Beryllium (Be^(+++)) the same orbital ra...

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