What are the Kα and Lα wavelengths for helium and magnesium?
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What are the Kα and Lα wavelengths for helium and magnesium?
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- Consider the Bohr model of the atom. Suppose an electron in a hydrogen atom transitions from the n=3 level to the n=5 level. 1) CALCULATE the energy (ΔE) for this transition. 2) Does this transition involve the absorption or emission of a photon of light? How do you know?16. 23 567 Electron in 6th excited state in Li** (at rest) jumps. to 2nd excited state. h, R, m are Planck's constant, Rydberg constant, mass of Li (ion). Find the speed acquired by Litt (ion). ++ ++ 3hR 3hR (1) (2) 4m 8m 40 hR 36 hR (3) j (4) 49 m 98 mA electron in a hydrogen atom transitions from the n=2 energy level to the ground state (n=1). What is the energy of the photon emitted? Give your answer in eV.
- The characteristic K, and K, lines for chromium have wavelengths of 0.229 nm and 0.208 nm, respectively. What is the ratio of the energy difference between the levels in chromium involved in the production of these two lines? ΔΕ. ΔΕ AEH-alpha line is a red visible spectral line in hydrogen atom with a wavelength of 656.3 nm. Consider five distant stars labeled A, B, C, D, and E. The light from these starts was detected on Earth and, after performing spectral analysis, the following H-alpha wavelengths were measured: AA = 667.5 nm, Ag = 650.4 nm, Ac = 653.5 nm, Ap = 660.3 nm, and AE = 664.9 nm. Which star has the slowest speed relative to Earth, in which direction and how fast does it move? The slowest star is? and it moves Select an answer The speed of the slowest star (in km/s), Vslowest = Which star has the fastest speed relative to Earth, in which direction and how fast does it move? The fastest star is? and it moves Select an answer Earth. The speed of the fastest star (in km/s), Vfastest Submit Question = Earth. Units Select an answer ✓ Units Select an answer ✓Please answer within 30 minutes. I will upvote! Using Wien formula, find the energy density uλ at wavelength λ=450 nm at temperature T=750K , where a=0.015 and b′=750.