Which of the following correctly identifies how Louis de Broglie's concept of the electron as a particle-wave helped to explain energy levels for an electron in an atom. A. de Broglie described the electron orbit as a circular standing wave pattern with a specific angular momentum as required by the Bohr hypothesis. B. de Broglie described the electron as a planar wave with a non- specific frequency as required by the Bohr hypothesis. <> C. de Broglie described the electron as a wave whose range of frequencies was continuous and thus allowed for all the possible electron energies predicted by Bohr. D. de Broglie described the electron as a spherical wave whose wavelength was dependent upon the speed with which it orbits the nucleus, as needed to explain the Bohr hypothesis.

Which of the following should have the lowest overall energy? O a. Atin atom with one more electron O b. An iodine atom with one more electron O c. An antimony atom with one more electron O d. Atellurium atom with one more electron O e. A xenon atom with one more electron

In the Bohr model for the hydrogen atom, which of the following transitions results in the emission of the highest energy photon?       A. n=3  →  n=4    B. n=4  →  n=3   C. n=4  →  n=2   D. n=1  →  n=3     E. n=1  →  n=4

Which of the following statements is incorrect?  a. As the energy of a photon increases, its frequency decreases. b. As the wavelength of a photon increases, its frequency decreases. c. None of these statements are incorrect. d.The product of wavelength and frequency of electromagnetic radiation is a constant. e.As the wavelength of a photon increases, its energy decreases.

Select the correct answer. Why was Niels Bohr's atomic model superior to all the earlier models? OA It proved that the atom was Indivisible and therefore the smallest unit of matter. O B. It showed how the electron could orbit the nucleus without falling Into It. C. It was the first to show that the atom had no net charge. OD. It used wave behavlor to explain the positions of electrons around the nucleus. Reset Next

of the velocity in (c) to the speed of light? 2. In 1913 Neils Bohr proposed a model for the hydrogen, now known as the Bohr atom, that explained the emission spectrum of the hydrogen atom as well as one-electron ions like Het. The model permits the electron to orbit the nucleus by a set of discrete orbits where each orbit is associated with an integer value n, known as the principal quantum number. Depending upon the orbital occupied by the electron, the energy of the hydrogen atom (or one-electron ions) can only assume the following discrete values 1terd 30 tF aconstant En n2 prineiple 2 S1 where RH 2.18x10-18 J is the Rydberg constant and Z is the number of protons in the nucleus.(a) List the energies of the hydrogen atom for the first three orbits (n-1, 2, and 3).*(b) Compute the energy absorbed by the hydrogen atom when the electron is excited from the lowest orbit (n 1) to the third lowest orbit (n 3). (c) Calculate the frequency v of the photon E = y absorbed by the hydrogen…

Which rule states that in filling out the electron configuration of an atom, you start with the lowest energy level? A. Hunds Rule B. Aufbau Principle C. Paul Exclusion Principle D. Bohr's Rule

Which is a true statement regarding the Bohr model of the H atom? O Bohr's model stated the electron has only certain allowed energy states, not a continuous range of values. O Bohr's model did not successfully predict all the lines in the atomic emission spectrum of hydrogen. O Bohr's model correctly explained the movement of the electron about the nucleus. Onone of these

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.

7. Give the Bohr orbit configurations and draw the electron dot symbol for each of the following elements. a. Ne b. Mg C. P d. Se e. Rb