which of the hydrogen like species
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Some Hydrogen like species are : He+, Li2+ , Be3+ etc.
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A hydrogen-like atom (or hydrogenic atom) is any atom that has single valence electron. Examples of hydrogen-like atoms include Ca+ and Sr+ , He+, Li2+, and Be3+.
Hydrogenic means 'like hydrogen'. Hydrogenic species are like hydrogen. They are consist of a single nucleus orbited by a single electron.
Explanation:
- A hydrogen like species is always present in a higher excited state of quantum number .
- This excited atom makes a transition to the first excited state by successive emission of two photons of energies ,10.20eV and 17.0eV respectively.
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