CHEMACTIVITY 23 CRITICAL THINKING QUESTIONS

To the Instructor These activities are designed to be used by students working in groups. The figure below represents part of a wave. Would this compound be ionic or molecular circle one? Compare containers A and B in Model 2. Based on the data in Table 1, rank the following atoms in terms of the number of unpaired electrons in each atom: Consider the electron configurations of the two species.

You do not need to memorize any numbers, as a periodic table will always be available for your use. And some of us have left the planet. How much time will it take before half the sample has decayed? Would there be any ions dissolved in the water? Diagram of a lithium atom using the shell model. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning, or otherwise, except as permitted under Sections or of the United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, Inc. Consider, for example, the order that orbitals are filled to reach the electron configuration of the element lead Pb , with 82 electrons:

Which molecule of each pair has the greater dipole moment?

Based on the data in Table cjemactivity and your answers to CTQs 6 and 7, do electrons in a given energy level tend to pair or not? Fuel efficiency of a particular automobile A particular automobile can travel 27 miles per gallon of gasoline used. MOPAC calculations yield bond orders, bond lengths, and bond angles that are generally in good agreement with experimental evidence. Considering your answer to CTQs 12 and 13, does a chemactivvity affect the equilibrium amounts of reactants or products?

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For each of the following atoms, predict the most likely ion: Explain, in terms of electronegativities, why the dividing line between metals and nonmetals in the periodic table the red line that steps down from beneath B to between Po and At is oriented the way that it is chemactiviy opposed to being, for example, horizontal or vertical. Photoelectron spectroscopy of a hypothetical atom.

chemactivity 23 critical thinking questions

Consider the formula for magnesium fluoride, MgF2. CA07 – 30 – Model 7: The value of the ionization energy of He given in Table 1 is described as being consistent with two electrons in a “shell” approximately the same distance from the nucleus as the one electron in H.

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What is the limiting reagent? Exercises Unless otherwise stated, calculate all mass values in grams. Metric system units and prefixes Table 1: There are exactly mg in one karat. Two representations of the Be atom are given in Figure 2.

What is the partial charge on the C atom? Of particular interest to chemists is a quantitative measure of how tightly an atom holdsits valence electrons. Is the energy of a chemactivitu proportional or inversely proportional to!?

Chemistry a Guided Inquiry

Consider, for example, the order that orbitals are filled to reach the electron configuration of critkcal element lead Pbwith 82 electrons: Precision Generally, when measurements are reported, tinking is uncertainty in only the final digit.

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The Elephant and the Methane Molecule One elephant has one trunk and four legs. What is the predicted O—N—O bond angle? Minimization of electron-electron repulsion leads to a unique geometry for two, three, and four domains of electrons. What is the mass of 1.

General, Organic, and Biological Chemistry: A Guided Inquiry

If q for an electron is —1, a what is q for a proton? Explain how this is the same as the one in the equation you developed in CTQ 7. Keep only as many significant figures in your answer as in the measurement with the fewest number of sig figs.

Put the following molecules in order of increasing bond length: Thus the net resulting charge acting on a valence electron to attract it crutical the nucleus differs from the core charge.

chemactivity 23 critical thinking questions

Dick, your statement gave me the confidence to undertake this project. Which is the largest species in each of the following groupings? How is the solubility of an ionic compound related to its classification as an electrolyte?

Ionization energies are commonly measured in joules, J. What is the most prevalent ion of Al? How many Kelvins are there between the freezing and boiling points of water?