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Multiple Choice
What is the wavelength necessary to completely remove an electron from the fourth shell (n = 4) of a hydrogen atom, given the Rydberg constant R = 1.097 x 10^7 m^-1?
A
656.3 nm
B
97.2 nm
C
486.1 nm
D
121.6 nm
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Verified step by step guidance
1
Understand that the problem involves calculating the energy required to remove an electron from the fourth shell (n = 4) of a hydrogen atom, which is known as ionization energy.
Use the Rydberg formula for hydrogen: , where is the Rydberg constant, is Planck's constant, and is the principal quantum number.
Calculate the energy required to remove the electron from n = 4 using the formula: . This will give you the energy in joules.
Convert the energy to wavelength using the equation: , where is the speed of light and is the wavelength.
Solve for the wavelength using the rearranged formula: . This will give you the wavelength necessary to remove the electron from the fourth shell.