Astronomers have detected hydrogen atoms in interstellar space in the n $=742$ excited state. Suppose an atom in this excited state undergoes a transition from n $=742$ to n $=731.$

$3$rd attempt

Part $1(1$ point$)$FeedbackSee HintSee Periodic Table

What is the atom's change in energy as a result of this transition?

$1\mathrm{.}201$

x $10$

$-25$

J

Part $2(1$ point$)$FeedbackSee Hint

What is the wavelength of radiation corresponding to this transition?

$1\mathrm{.}201$

x $10$

$-25$

m

Part $3(1$ point$)$Feedback

What one kind of telescope would astronomers need in order to detect radiation of this wavelength?

Choose one or more:

infrared$$

radio

visible

microwave