MFAHH
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Question: When considering its atomic transitions, a triply ionised Beryllium ion behaves similarly to a hydrogen atom but with an increased nuclear charge. By considering the derivation of the Bohr model for Hydrogen estimate the energy of the ground state energy of the Be3+ ion.

Not really sure on this one. Help please?
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Stonebridge
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What don't you understand?
We can't help if we don't know what you already know and understand about the Bohr model, and what is causing the problem with relating this to Beryllium.
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MFAHH
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I understand the bohr model pretty well but as far I can gauge, the question is asking me to substitute n=1(ground state) into E=-13.6/n^2 since the beryllium ion behaves as a hydrogen atom. However I don't think it's as simple as that and have an inkling that I'll have to account for the net positive charge on the beryllium atom at some point
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Stonebridge
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If I'm not mistaken, the experimentally measured energy of the ground state of a Be3+ atom is very close to the value predicted by the Bohr model, putting Z=4 in the formula.
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MFAHH
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Aha! Thanks a bunch
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