Part A Find the frequency of light f radiated by an electron moving from orbit n1=2...

Question

Question

Part A

Find the frequency of light f radiated by an electron moving from orbit n1=2 to n2=1 inside of a He+ ion.

Express your answer in hertz to three significant figures.

Part B

In the Bohr model of hydrogen, the radius of the nth orbit is defined as

rn=a0n2Z,

where

a0=4???2mee2=5.29

Answer 1

Answer #1

E_n = -13.60 Z²/n² eV
now Z = 2
E_n = -54.40 /n² eV
a) E₂ - E₁ = 40.8 eV = hf
?f = 9.85*10¹⁵ Hz

b) r₁ = a₀/2 = 2.65*10^-11 m

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Answer 2

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