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Q. What are the values of $n_{1}$ and $n_{2}$ respectively for $H _{\beta}$ line in the Lyman series of hydrogen atomic spectrum $44$ ?

JIPMERJIPMER 2009Structure of Atom

Solution:

$H _{\beta}$ line is formed when electron jumps from $3 r d$ orbit to Ist orbit in Lyman series.
$\therefore n_{1}=1,\, n_{2}=3$