what type of radiation is emitted by hot hydrogen gas when electrons jump from the n=8 level to n=7 level?

Question

... n=7 level of the atoms?

A) 52,489 m, in the radio

B) 1.905 µm, in the near infrared

C) 19.05 µm, the the infrared

D) 38.9 nm, in the ultraviolet

a,b,c, or d?

Answer 1

the answer is C.
http://hyperphysics.phy-astr.gsu.edu/hbase/hyde.html
http://hyperphysics.phy-astr.gsu.edu/hbase/hyde.html#c4