Q what is the true option which of the following atoms has the smallest radins * CL *P Ge Pb 2) Which of the following statements is true? P * A set of p orbitals can have a marimen * The sorbit has a spherical shope of to decrons level has no f of bitats to the forth energy bitals in 'd' sublevel, 3) light has wavelength of Gorla am what is the 2 /energy of -20 photon of this light to 110x10-195 +3131x1015 +27/810185 +3.68 x 10 J 1) How many elections can be described by the quantum numbers = 31=3, mt=-+ фо 2 6 s) which of these statements is true lower energy to Upon absoption of the energy the elections jumps from a state to a higher energy state and NE is negative to The election configuration of the elements in group 7A ends * with nsa пря As the wavelength decreases the energy of photon increases to The p-orbity has a spherical shape. As the angular quantum number (D) increyes, the size of the orbital increases,

Q what is the true option which of the following atoms has the smallest radins * CL P Ge Pb 2) Which of the following statements is true? P A set of p orbitals can have a marimen * The sorbit has a spherical shope of to decrons level has no f of bitats to the forth energy bitals in 'd' sublevel, 3) light has wavelength of Gorla am what is the 2 /energy of -20 photon of this light to 110x10-195 +3131x1015 +27/810185 +3.68 x 10 J 1) How many elections can be described by the quantum numbers = 31=3, mt=-+ фо 2 6 s) which of these statements is true lower energy to Upon absoption of the energy the elections jumps from a state to a higher energy state and NE is negative to The election configuration of the elements in group 7A ends * with nsa пря As the wavelength decreases the energy of photon increases to The p-orbity has a spherical shape. As the angular quantum number (D) increyes, the size of the orbital increases,

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter11: Modern Atomic Theory

Section: Chapter Questions

Problem 27QAP: Discuss briefly the difference between an orbit (as described by Bohr for hydrogen) and an orbital...

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Consider the following statement "The ionization energy for the potassium atom is negative, because when K loses an electron to become K +, it achieves a noble gas electron configuration." Indicate everything that is correct in this statement. Indicate everything that is incorrect. Correct the incorrect information and explain.
Until recently, it was thought that Ca was unstable, and that the Ca atom therefore had a negative electron affinity. Some new experiments have now measured an electron affinity of +2.0kJmol1 for calcium. What is the longest wavelength of light that could remove an electron from Ca ? In which region of the electromagnetic spectrum does this light fall?
The outermost electron in an alkali-metal atom is sometimes described as resembling an electron in the corresponding state of a one-electron atom. Compare the first ionization energy of lithium with the binding energy of a 2s electron in a one-electron atom that has nuclear charge Zeff , and determine the value of Zeff that is necessary for the two energies to agree. Repeat the calculation for the 3s electron of sodium and the 4s electron of potassium.
When metallic sodium is dissolved in liquid sodium chloride, electrons are released into the liquid. These dissolved electrons absorb light with a wavelength near 800 nm. Suppose we treat the positive ions surrounding an electron crudely as defining a three-dimensional cubic box of edge L, and we assume that the absorbed light excites the electron from its ground state to the first excited state. Calculate the edge length L in this simple model.
Quantum mechanics predicts that the energy of the ground state of the H atom is 13.6eV . Insight into the magnitude of this quantity is gained by considering several methods by which it can be measured. (a) Calculate the longest wavelength of light that will ionize H atoms in their ground state. (b) Assume the atom is ionized by collision with an electron that transfers all its kinetic energy to the atom in the ionization process. Calculate the speed of the electron before the collision. Express your answer in meters per second (ms1) and miles per hour (milesh1) . (c) Calculate the temperature required to ionize a H atom in its ground state by thermal excitation. (Hint: Recall the criterion for thermal excitation of an oscillator in Planck’s theory of blackbody radiation is that hvkBT .)
The first ionization energy of helium is 2370kJmol1 , the highest for any element. (a) Define ionization energy and discuss why for helium it should be so high. (b) Which element would you expect to have the highest second ionization energy? Why? (c) Suppose that you wished to ionize some helium by shining electromagnetic radiation on it. What is the maximum wavelength you could use?
How does probability fit into the description of the atom?
Construct an energy level diagram showing all orbitals for the hydrogen atom up to n=5, labeling each orbital with its appropriate quantum numbers. How many different orbitals are in each shell?
Use the aufbau procedure to obtain the electron configuration and orbital diagram for atoms of the following elements. (a) Be (b) B (c) Ne (d) Rb
The energy needed to remove one electron from a gaseous potassium atom is only about two-thirds as much as that needed to remove one electron from a gaseous calcium atom, yet nearly three times as much energy as that needed to remove one electron from K+ as from Ca+ . What explanation can you give for this contrast? What do you expect to be the relation between the ionization energy of Ca+ and that of neutral K?
onsider the following statements: “The ionization energy for the potassium atom is negative because when K loses an electron to become K+ , it achieves a noble, gas. electron configuration." Indicate everything that is correct in this statement. Indicate everything that is incorrect. Correct the mistaken information and explain the error.
Cesium is used extensively in photocells and in television cameras because it has the lowest ionization energy of all the stable elements. (a) What is the maximum kinetic energy of a photoelectron ejected from cesium by 520 nm light? Note that if the wavelength of the light used to irradiate the cesium surface becomes longer than 660 nm, no photoelectrons are emitted. (b) Use the rest mass of the electron to calculate the velocity of the photoelectron in (a).