Work shown please. Answers to the following questions:
1) 3.864 x 10^-19 J
2.412 eV
5.831 x 10^14 Hz
2) 154 pm
3) 1.94 x 10^-18 J or 12.1 eV
4) 32 electrons
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Work shown please. Answers to the following questions:
1) 3.864 x 10^-19 J
2.412 eV
5.831...
Answers for questions 1-12 please The energy level diagram for a hydrogen atom is shown. The...
Answers for questions 1-12 please
The energy level diagram for a hydrogen atom is shown. The following 000 ev questions are about the energy levels of the hydrogen atom. An0544 ev -1.51 ev 0.850 ev electron jumps from the n 5 level to the n 1 level. 1. Will this result in an emission line, or an absorption line in then-3 n 4 spectrum of this atom? 2. Which excited state did the electron start at? n-2 3.40 ev 2....
An X-ray photon has an energy of 35,000 eV. (1 eV = 1.6 x 10-19 Joules)...
An X-ray photon has an energy of 35,000 eV. (1 eV = 1.6 x 10-19 Joules) (a) What is the energy of the photon in Joules? (b) What is the frequency of the X-ray? (c) What is the wavelength of the X-ray?
Consider the following energy levels of a hypothetical atom: E4 -1.41 x 10-19 J Ez-5.01 x...
Consider the following energy levels of a hypothetical atom: E4 -1.41 x 10-19 J Ez-5.01 x 10-19 J E2 -1.15 x 10-18 J E1 -1.75 x 10-18 (a) What is the wavelength of the photon needed to excite an electron from Ey to E4? *10 m (b) What is the energy in joules) a photon must have in order to excite an electron from E, to Ez? *10 J (c) When an electron drops from the Ez level to the...
Question 8 An electron in an atom absorbs a photon with an energy of 3.07 eV and jumps from the n 2 to n = 4 energy lev...
Question 8 An electron in an atom absorbs a photon with an energy of 3.07 eV and jumps from the n 2 to n = 4 energy level in the atom. Tries remaining: Calculate the wavelength of the photon absorbed by the electron. Marked out of 1.00 Answer m Flag question Check Question 9 4 level then jumps down to the n 3 level, emitting a photon with a wavelength of 2.14 um. The electron in the n Tries remaining:...
Chapter 7 (Quantum Theory and Atomic Structure) 7 3 attempts left Check my work Be sure...
Chapter 7 (Quantum Theory and Atomic Structure) 7 3 attempts left Check my work Be sure to answer all parts. Cobalt-60 is a radioactive isotope used to treat cancers of the brain and other tissues. A gamma ray emitted by an atom of this isotope has an energy of 5.70 MeV (million electron volts 1 eV- 1.602 x 10 J). What is the frequency (in Hz) and the wavelength (in m) of this gamma ray? Enter your answers in scientific...
1. Calculate the Work Function of a metal that has a threshold frequency of 9.54 x...
1. Calculate the Work Function of a metal that has a threshold frequency of 9.54 x 1014 s-1. answer: 63.3*10^(-20)J 2. What is the wavelength of this light in nm? answer: 314nm 3. What would be the Kinetic Energy of an ejected photoelectron if 3.26 x 1015 s-1 light struck (hit) that same metal? answer: 1.53*10^(-18)J 4. What would be the velocity and De Broglie Wavelength of ejected photoelectron? answer: 1.83*10^(6)m/s 5.What is the wavelength of light (in nm) of...
1. Does the fact that the speed of light is a definite, predictable quantity conflict with...
1. Does the fact that the speed of light is a definite, predictable quantity conflict with the uncertainty relations? 2. How could you tell if electrons in very distant galaxies obey the Pauli exclusion principle? 3. Calculate the maximum wavelength for the initiation of a photoelectric current in the aluminum (work function W = 4.28 eV). (Answer: 290 nm) 4. An electron in the hydrogen atom drops from the n=5 level to the n=1 level. What are the frequency, wavelength,...
For metallic cesium (Cs), the threshold energy is 1.95 eV (1 eV = 1.602·10−19 J). Find...
For metallic cesium (Cs), the threshold energy is 1.95 eV (1 eV = 1.602·10−19 J). Find the threshold frequency and wavelength. In what part of the spectrum will Cs begin to emit photoelectrons? Describe the situation when the wavelength of the incident light is 530 nm. If applicable, find the kinetic energy and, if you are so inclined, the velocity of photoelectrons if Cs is irradiated with that light.
Consider the following energy levels of a hypothetical atom: E4 −2.21 × 10−19 J E3 −6.41...
Consider the following energy levels of a hypothetical atom: E4 −2.21 × 10−19 J E3 −6.41 × 10−19 J E2 −1.15 × 10−18 J E1 −1.65 × 10−18 J (a) What is the wavelength of the photon needed to excite an electron from E1 to E4? × 10 m (b) What is the energy (in joules) a photon must have in order to excite an electron from E2 to E3? × 10 J (c) When an electron drops from the...
In a particular metal, the K-shell has an energy of -(24.0+A) keV, while the L-shell has...
In a particular metal, the K-shell has an energy of -(24.0+A) keV, while the L-shell has an energy of –(2.50+B) keV. Find the wavelength of the Ka (alpha) characteristic x-ray for this metal. Give your answer in picometers (pm)and with 3 significant figures. A: 1 B: 4 In the Bohr model for hydrogen, the energy levels are given by En = (-13.6eV) / n2. Find the energy of a photon emitted when an electron in a hydrogen atom jumps from...
Answers for questions 1-12 please
The energy level diagram for a hydrogen atom is shown. The following 000 ev questions are about the energy levels of the hydrogen atom. An0544 ev -1.51 ev 0.850 ev electron jumps from the n 5 level to the n 1 level. 1. Will this result in an emission line, or an absorption line in then-3 n 4 spectrum of this atom? 2. Which excited state did the electron start at? n-2 3.40 ev 2....
Consider the following energy levels of a hypothetical atom: E4 -1.41 x 10-19 J Ez-5.01 x 10-19 J E2 -1.15 x 10-18 J E1 -1.75 x 10-18 (a) What is the wavelength of the photon needed to excite an electron from Ey to E4? *10 m (b) What is the energy in joules) a photon must have in order to excite an electron from E, to Ez? *10 J (c) When an electron drops from the Ez level to the...
Question 8 An electron in an atom absorbs a photon with an energy of 3.07 eV and jumps from the n 2 to n = 4 energy level in the atom. Tries remaining: Calculate the wavelength of the photon absorbed by the electron. Marked out of 1.00 Answer m Flag question Check Question 9 4 level then jumps down to the n 3 level, emitting a photon with a wavelength of 2.14 um. The electron in the n Tries remaining:...
Chapter 7 (Quantum Theory and Atomic Structure) 7 3 attempts left Check my work Be sure to answer all parts. Cobalt-60 is a radioactive isotope used to treat cancers of the brain and other tissues. A gamma ray emitted by an atom of this isotope has an energy of 5.70 MeV (million electron volts 1 eV- 1.602 x 10 J). What is the frequency (in Hz) and the wavelength (in m) of this gamma ray? Enter your answers in scientific...
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