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A hydrogen-like ion has the wavelength difference between the first lines of the Balmer and lyman series equal to 16.58 nm. What ion is it ie. Z = ? (Hint: refer problem1)A. Z=4B. Z =5C. Z =2D. Z =3

Question

A hydrogen-like ion has the wavelength difference between the first lines of the Balmer and lyman series equal to 16.58 nm. What ion is it ie. Z = ? (Hint: refer problem1)A. Z=4B. Z =5C. Z =2D. Z =3

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Solution

The Balmer and Lyman series are two series of spectral lines in the hydrogen spectrum. The Balmer series is visible in the light spectrum, while the Lyman series is in the ultraviolet spectrum.

The wavelength of the spectral lines in these series can be calculated using the Rydberg formula:

1/λ = RZ^2(1/n1^2 - 1/n2^2)

where:

  • λ is the wavelength of the spectral line,
  • R is the Rydberg constant (approximately 1.097373 x 10^7 m^-1),
  • Z is the atomic number,
  • n1 and n2 are the principal quantum numbers of the two energy levels involved in the transition (n2 > n1).

The first line of the Balmer series corresponds to a transition from the n2 = 3 energy level to the n1 = 2 level. The first line of the Lyman series corresponds to a transition from the n2 = 2 level to the n1 = 1 level.

The problem states that the wavelength difference between these two lines is 16.58 nm. We can set up an equation using the Rydberg formula to solve for Z:

1/λ_Balmer - 1/λ_Lyman = RZ^2(1/2^2 - 1/3^2) - RZ^2(1/1^2 - 1/2^2) = 16.58 nm

Solving this equation for Z will give us the atomic number of the hydrogen-like ion.

However, without the numerical values of λ_Balmer and λ_Lyman, we cannot solve this equation. The problem does not provide enough information to determine the value of Z.

This problem has been solved

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