15. Which statement is not evidence for the wave-particle duality of light? O Light travels at a constant speed in the vacuum of space. Objects appear bent or broken when viewed through a glass of water. Electrons in specific locations around a nucleus emit specific wavelengths of light when they are excited. Electrons in gases can be excited with an electric current.

When electrons pass through a sheet of aluminum, a pattern of high and low intensity is observed. What claim does this experimental evidence support? Electrons are particles. Light is a particle. Light is a wave. Electrons are waves.

9. An electron in the hydrogen atom relaxes to the n =2 orbit and 434 nm light is emitted. What was the initial orbit of the electron? A: 5 Me g ou counoe

Identify the neutral element represented by this excited-state electron configuration. excited state: 1s²2s²2p63s²3p³ 4s¹ element symbol: Write the full ground-state electron configuration for that element. ground state: FEB 12 tv all A zoom

The minimum frequency of light needed to eject electrons from a metal is called the threshold frequency, ?0. Find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.20×1014 s−1. With what maximum kinetic energy will electrons be ejected when this metal is exposed to light with a wavelength of 285 nm?

The electron in an (unbound) hydrogen atom (H(g)) is excited from the ground state to the n=3 state.Which of the following statements are true and which are false. 1. it takes less energy to ionize the electron from n=3 than it does from the ground state.2. The wavelength of the light emitted when the electron returns to the ground state from n=3 is the same as the wavelength of light absorbed to go from n=1 to n=3.3. the electron is farther from the nucleus on average in the n=3 state than in the ground state.4. The first excited state corresponds to n=3.5. The wavelength of light emitted when the electron drops from n=3 to n=2 is shorter than the wavelength of light emitted if the electron falls from n=3 to n=1.

Data for the photoelectric effect of silver are given in the table. Frequency of incident radiation (1015 s−1) Kinetic energy of ejected electrons (10−19 J) 2.00 5.90 2.50 9.21 3.00 12.52 3.50 15.84 4.00 19.15 Using these data, find the experimentally determined value of Planck's constant, h , and the threshold frequency, ν0 , for silver.