Energy Levels: What is the wavelength of the photon emitted when an electron in a hydrogen atom which is in the initial state n = 8 jumps to the final state n = 2? (c = 3.00 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A. 205 nm
B. 104 nm
C. 389 nm
D. 486 nm
E. 610 nm
Answer: C
You might also like to view...
On the autumnal equinox, the Sun is:
A) 23.5° north of the celestial equator. B) 23.5° south of the celestial equator. C) on the celestial equator and moving north with respect to the equator. D) on the celestial equator and moving south with respect to the equator.
What happens when a particle of matter meets its corresponding antiparticle of antimatter?
A) The combined mass of the two particles is completely transformed into energy (photons). B) They can form a complete atom. C) They fuse to make a heavier particle. D) The question makes no sense, because antimatter does not really exist.
How does Pluto's behavior at perihelion support its planetary status?
What will be an ideal response?
Stare at a red wall for a few minutes and then gaze at a white wall. Due to retina fatigue you see
A) more red. B) cyan. C) black.