An electron in the  n = 5 level of the hydrogen atom relaxes to a lower energy level, emitting light of λ = 434 nm .   Find the principal level to which the electron relaxed. Express your answer as an integer.

Calculate E (energy), v (frequency), and the wavelength in nanometer for a H-atom. Rydberg constant is 2.179 x 10-18 . n=1 to n=3 transition. Is this transition absorbance or an emission? Please put your final answers (energy, frequency, wavelength, and whether it is emission or absorbance) here but show your calculations work in a separate sheet.

What is the wavelength in nm of a photon emitted from an H atom if an electron transfers from n=6 to n=3     RH = Rydberg constant = 1.097 x 10 -2  nm-1 Your answer should have 4 sig figs.

Atomic Ma.. O Register | Pearson . E Bio Sci Peer U ELECTRONIC STRUCTURE AND CHEMICAL BONDING Understanding the meaning of a de Broglie wavelength D 3/5 Imagine an alternate universe where the value of the Planck constant is 6.62607 × 10° J.s. In that universe, which of the following objects would require quantum mechanics to describe, that is, would show both particle and wave properties? Which objects would act like everyday objects, and be adequately described by classical mechanics? object quantum or classical? A mosquito with a mass of 1.8 mg, 9.9 mm long, moving O classical at 2.2 m/s. quantum O classical A car with a mass of 1100. kg, 5.0 m long, moving at 94.0 km/h. O quantum O classical A ball with a mass of 75. g, 13.3 cm wide, moving at 31.8 m/s. O quantur O classical A bacterium with a mass of 10.0 pg, 10.0 pm long, moving at 8.00 um/s. O quantum II