Question: The Rydberg constant for any hydrogenic atom is given by: The Paschen series of an unknown hydrogenic atom is found to converge at 91.13 nm

The Rydberg constant for any hydrogenic atom is given by: 

z'm,e R. %3D 8e;h'c 21.3 

The Paschen series of an unknown hydrogenic atom is found to converge at 91.13 nm in the emission spectrum. Find out the identity of this atom.

z'm,e R. %3D 8e;h'c 21.3

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