The longest wavelength in the Pfund series is 7459 nm. Find the series limit.
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![The longest wavelength in the Pfund series is 7459 nm. Find
the series limit.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F4c150129-159f-4dde-90d5-2588e9a84143%2Fae23c279-51b3-4729-83ff-c528777ff44f%2Femy367k_processed.png&w=3840&q=75)
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