Question

2. The spectral line in hydrogen spectrum obtained when the electron jumps from n=5
to n=2 energy level belongs to -
(a) Lyman Series
(b) Balmer Series
(c) Paschen Series
(d) Pfund Ser​

Answer 1

Answer:

lyman lyman U.V.region n2=2,3,4.../n1=1 n2−1Balmer  Balmer  Visible region n2=3,4,5..../n1=2 n2−2 Paschen Paschen Infra red (I.R) n2=4,5,6..../n1=3 n2−3 Bracket Bracket I.R.region n2=5,6,7..../n1=4 n2−4 Pfund Pfund I.R. region n2=6,7,8..../n1=5 n2−5 Humphery Humphery far I.R. region n2=7,8,9..../n1=6 n2−6