Question

When the hydrogen atom is in 1st rxcited level its rafius is?

Answer 1

Answer:

Explanation:

Radius=0.529n^2/Z,where n is shell number and Z is atomic number.In first excited state,n=2 and Z=1So, radius is 0.529*4/1=2.116 Angstroms

Answer 2

Answer:

your answer refer to attachment pic .

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