Jacksonville University X electron configuration for s Periodic Table /ibiscms/mod/flcn/view.php?id=963 5823 (? HW 3 A 9- RADHAA Activities and Due Dates HW 3 LA GIvelp 00/2600 Resources Hint For the following atoms in their ground state, determine the number of electrons in each energy shell. If there are no electrons in the particular energy shell for an atom, leave it blank. An atom with 6 total electrons. electrons in energy shell 2: electrons in energy shell 1: electrons in energy shell 4: electrons in energy shell 3: An atom with 10 total electrons. electrons in energy shell 2: electrons in energy shell 1: electrons in energy shell 4: electrons in energy shell 3: An atom with 13 total electrons. electrons in energy shell 2: electrons in energy shell 1: electrons in energy shell 4: electrons in energy shell 3: An atom with 20 total electrons. electrons in energy shell 1: electrons in energy shell 2: electrons in energy shell 3: electrons in energy shell 4: about us privacy policy terms of use help contact us careers eN P hp

Jacksonville University X electron configuration for s Periodic Table /ibiscms/mod/flcn/view.php?id=963 5823 (? HW 3 A 9- RADHAA Activities and Due Dates HW 3 LA GIvelp 00/2600 Resources Hint For the following atoms in their ground state, determine the number of electrons in each energy shell. If there are no electrons in the particular energy shell for an atom, leave it blank. An atom with 6 total electrons. electrons in energy shell 2: electrons in energy shell 1: electrons in energy shell 4: electrons in energy shell 3: An atom with 10 total electrons. electrons in energy shell 2: electrons in energy shell 1: electrons in energy shell 4: electrons in energy shell 3: An atom with 13 total electrons. electrons in energy shell 2: electrons in energy shell 1: electrons in energy shell 4: electrons in energy shell 3: An atom with 20 total electrons. electrons in energy shell 1: electrons in energy shell 2: electrons in energy shell 3: electrons in energy shell 4: about us privacy policy terms of use help contact us careers eN P hp

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter6: Quantum Mechanics And Molecular Structure

Section: Chapter Questions

Problem 36P: Photoelectron spectra were acquired from a sample of gaseous O2 using X-ray radiation with...

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Photoelectron spectra were acquired from a sample of gaseous O2 using X-ray radiation with wavelength 0.99 nm and energy 1253.6 eV. The spectrum contained a large peak for photoelectrons with speed of 1.57107ms1 . Calculate the ionization energy of these electrons. Identify the orbital from which they were most likely emitted.
The helium ion He+ is a one-electron system whose wave functions and energy levels are obtained from those for H by changing the atomic number to Z=2 . Calculate the average distance of the electron from the nucleus in the 2s orbital and in the 2p orbital. Compare your results with those in Problem 11 and explain the difference.
For the Li atom, the energy difference between the ground state and the first excited state, in which the outermost electron is in a 2p orbital, is 2.961019J . In the Li2+ ion, the energy difference between the 2s and 2p levels is less than 0.00002 of this value. Explain this observation.
Estimate the probability of finding an electron which is excited into the 2s orbital of the H atom, looking in a cubical box of volume 0.751036m3 centered at the nucleus. Then estimate the probability of finding the electron if you move the volume searched to a distance of 105.8 pm from the nucleus in the positive z direction. (Note that since these volumes are small, it does not matter whether the volume searched is cubical or spherical.)
The wave function of an electron in the lowest (that is, ground) state of the hydrogen atom is (r)=( 1 a 0 3 )1/2exp(r a 0 )ao=0.5291010m (a) What is the probability of finding the electron inside a sphere of volume 1.0pm2 , centered at the nucleus (1pm=1012m) ? (b) What is the probability of finding the electron in a volume of 1.0pm2 at a distance of 52.9 pm from the nucleus, in a fixed but arbitrary direction? (c) What is the probability of finding the electron in a spherical shell of 1.0 pm in thickness, at a distance of 52.9 pm from the nucleus?
Use the mathematical expression for the 2pz wave function of a one-electron atom (see Table 5.2) to show that the probability of finding an electron in that orbital anywhere in the x-y plane is 0. What are the nodal planes for a dxz orbital and for a dx2y2 orbital?
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?
Consider the representations of the p and d atomic orbitals in Figs. 2-15 and 2- 17. What do the + and signs indicate?
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?
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 .)
Using Fig. 2-30, list the elements (ignore the lanthanides and actinides) that have ground-state electron configurations that differ from those we would expect from their positions in the periodic table.