Homework Answers
(1) it's momentum can be known with a large uncertainty.
(2) most of an atom's mass is in the nucleus which has positive charge and most of an atoms volume is in electron shells.
(3) It predicts the wavelength of the emitted light from hydrogen and it is corresponds to Bohr model of the atom.
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If an electron's position is known with small uncertainty, then the Heisenberg Uncertainty Principle predicts that...
If the electron were displaced from equilibrium by a distance greater than R, would the electron...
If the electron were displaced from equilibrium by a distance
greater than R, would the electron oscillate? Would its motion be
simple harmonic? Explain your reasoning. (Historical note:
In 1910, the atomic nucleus was discovered, proving the Thomson
model to be incorrect. An atom's positive charge is not spread over
its volume as Thomson supposed, but is concentrated in the tiny
nucleus of radius 10^−14 to 10^−15m.)
Any solution with an explanation for this question would be
greatly appreciated.
Thank...
which of the following statements are true? a.) the uncertainty principle states that we can never...
which of the following statements are true? a.) the uncertainty principle states that we can never know both the exact location and speed of an electron. b.) an orbital is the volume in which we are most likely to find an electron. c.) The emission spectrum of a particular element is always the same and can be used to identify the element. d.) Part of the Bohr model proposed that electrons int he hydrogen atom are located in "stationary states"...
2) The Heisenberg uncertainty principle states that A) matter and energy are really the same thing...
2) The Heisenberg uncertainty principle states that A) matter and energy are really the same thing B) it is impossible to know anything with certainty C) it is impossible to know both the exact position and momentum of an electron D) there can only be one uncertain digit in a reported number E) it is impossible to know how many electrons there are in an atom 3) The n - 2 to n-6 transition in the Bohr hydrogen atom corresponds...
Quantum Physics - Heisenberg uncertainty The Planck constant is 6.626x10^-34 ) s. Case 1: The position...
Quantum Physics - Heisenberg uncertainty The Planck constant is 6.626x10^-34 ) s. Case 1: The position of an electron in an atom is measured to an accuracy of (or with an uncertainty of) Ax = 0.0190 nm. (a) What is the electron's uncertainty in momentum, Ap ? Write the result in terms of 10-24 kg - m/s . Keep 3 decimal places. Enter a number x10-24g.m/s Incorrect (0.0%) Submit (3 attempts remaining) (b) The mass of an electron is 9.11x10^-31...
Quantum Physics - Heisenberg Uncertainty The Planck constant is 6.626x10^-34 J s. Case 1: The position...
Quantum Physics - Heisenberg Uncertainty The Planck constant is 6.626x10^-34 J s. Case 1: The position of an electron in an atom is measured to an accuracy of (or with an uncertainty of) Ax = 0.0190 nm. (a) What is the electron's uncertainty in momentum, Ap ? Write the result in terms of 10-24 kg · m/s . Keep 3 decimal places. Enter a number x10-24kg. m/s Submit (5 attempts remaining) (b) The mass of an electron is 9.11x10^-31 kg....
Question 1 What is the net electric charge (in units of e) of an atom of...
Question 1 What is the net electric charge (in units of e) of an atom of lead (Z82)? qlead exact number, no tolerance Attempts: 0 of 5 used Question 2 Suppose a lithium atom (Z units of e? 3) has been singly ionized. What is the net electric charge of the resulting lithium ion in lithium exact number, no tolerance Attempts: 0 of 5 used Question 3 Suppose a lead atom (Z = 82) has been doubly ionized. What is...
Positronium is a hydrogen-like atom that consists of a positron (anti-electron) and an electron revolving around...
Positronium is a hydrogen-like atom that consists of a positron (anti-electron) and an electron revolving around one another. The positron has the same mass as an electron but the opposite charge (same magnitude, but positive). a. Use Bohr's theory and the reduced mass (see problem lb and Krane Sec. 6.8) of the positron-electron system to show that 6.8 eV En= --"2_ , for positronium. b. The n -1 to n-2 transition in positronium has been measured to be roughly 1.2336...
In class we discussed a simple model for an atom, in which a cloud of negative...
In class we discussed a simple model for an atom, in which a cloud of negative charge (the electrons) surrounds a fixed nucleus of positive charge. Develop the details of this model as follows: Suppose an atom has one electron with charge -e and a ucleus of charge e 1.6 x 10-19 C, and the electronic charge is uniformly distributed over a sphere with the Bohr radius a0 4 E0n°/(me2) 5.29% 10-11 m If the electron cloud is displaced a...
3. For a while in the early 20th century one proposed model for the structure of...
3. For a while in the early 20th century one proposed model for the structure of atoms was that a positive point charge (the nucleus) +Ze was at the center of a charged sphere of radius R and charge -Ze. To be clear, the negative charge in the sphere was proposed to be spread through the volume of the sphere, not on its surface. Z is the atomic number. (a) In terms of the symbols, Z and R, what is...
In the Bohr model of the hydrogen atom, the allowed orbits of the electron (labeled n...
In the Bohr model of the hydrogen atom, the allowed orbits of the electron (labeled n = 1, 2, 3, …) have angular momentum , orbital radii , and energies . In these expressions me is the mass of the electron. In an exotic atom the electron is replaced by a different subatomic particle that has the same charge as an electron but a different mass. Two examples that have been studied are muonic hydrogen, in which the electron is...
If the electron were displaced from equilibrium by a distance
greater than R, would the electron oscillate? Would its motion be
simple harmonic? Explain your reasoning. (Historical note:
In 1910, the atomic nucleus was discovered, proving the Thomson
model to be incorrect. An atom's positive charge is not spread over
its volume as Thomson supposed, but is concentrated in the tiny
nucleus of radius 10^−14 to 10^−15m.)
Any solution with an explanation for this question would be
greatly appreciated.
Thank...
2) The Heisenberg uncertainty principle states that A) matter and energy are really the same thing B) it is impossible to know anything with certainty C) it is impossible to know both the exact position and momentum of an electron D) there can only be one uncertain digit in a reported number E) it is impossible to know how many electrons there are in an atom 3) The n - 2 to n-6 transition in the Bohr hydrogen atom corresponds...
Quantum Physics - Heisenberg uncertainty The Planck constant is 6.626x10^-34 ) s. Case 1: The position of an electron in an atom is measured to an accuracy of (or with an uncertainty of) Ax = 0.0190 nm. (a) What is the electron's uncertainty in momentum, Ap ? Write the result in terms of 10-24 kg - m/s . Keep 3 decimal places. Enter a number x10-24g.m/s Incorrect (0.0%) Submit (3 attempts remaining) (b) The mass of an electron is 9.11x10^-31...
Quantum Physics - Heisenberg Uncertainty The Planck constant is 6.626x10^-34 J s. Case 1: The position of an electron in an atom is measured to an accuracy of (or with an uncertainty of) Ax = 0.0190 nm. (a) What is the electron's uncertainty in momentum, Ap ? Write the result in terms of 10-24 kg · m/s . Keep 3 decimal places. Enter a number x10-24kg. m/s Submit (5 attempts remaining) (b) The mass of an electron is 9.11x10^-31 kg....
Question 1 What is the net electric charge (in units of e) of an atom of lead (Z82)? qlead exact number, no tolerance Attempts: 0 of 5 used Question 2 Suppose a lithium atom (Z units of e? 3) has been singly ionized. What is the net electric charge of the resulting lithium ion in lithium exact number, no tolerance Attempts: 0 of 5 used Question 3 Suppose a lead atom (Z = 82) has been doubly ionized. What is...
Positronium is a hydrogen-like atom that consists of a positron (anti-electron) and an electron revolving around one another. The positron has the same mass as an electron but the opposite charge (same magnitude, but positive). a. Use Bohr's theory and the reduced mass (see problem lb and Krane Sec. 6.8) of the positron-electron system to show that 6.8 eV En= --"2_ , for positronium. b. The n -1 to n-2 transition in positronium has been measured to be roughly 1.2336...
In class we discussed a simple model for an atom, in which a cloud of negative charge (the electrons) surrounds a fixed nucleus of positive charge. Develop the details of this model as follows: Suppose an atom has one electron with charge -e and a ucleus of charge e 1.6 x 10-19 C, and the electronic charge is uniformly distributed over a sphere with the Bohr radius a0 4 E0n°/(me2) 5.29% 10-11 m If the electron cloud is displaced a...
3. For a while in the early 20th century one proposed model for the structure of atoms was that a positive point charge (the nucleus) +Ze was at the center of a charged sphere of radius R and charge -Ze. To be clear, the negative charge in the sphere was proposed to be spread through the volume of the sphere, not on its surface. Z is the atomic number. (a) In terms of the symbols, Z and R, what is...
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