2. Given their electron configurations, identify the following elements and specify in what group of the periodic table do they belong: (a) [A13d104s24p4(b) [Rn]7s²(c) [Kr]4d10(d) [A]4s²3d8 3. Group the species that are isoelectronic: Be2+, F, Fe2+, N³-, He, S2', Co3+, Ar. 4. Two atoms have the electron configurations 1s2s2p6 and 1s22s2p63s1. The first ionization energy of one is 2080 kJ/mol, and that of the other is 496 kJ/mol. Pair each ionization energy with one of the given electron configurations. Justify your choice. 5. The bonds in beryllium hydride (BeH2) molecules are polar, and yet the dipole moment of the molecule is zero. Explain. 6. Predict and draw the molecular geometries (show bond angles) for these molecules: a. BH3 b. BrCl3 c. CF4

2. Given their electron configurations, identify the following elements and specify in what group of the periodic table do they belong: (a) [A13d104s24p4(b) [Rn]7s²(c) [Kr]4d10(d) [A]4s²3d8 3. Group the species that are isoelectronic: Be2+, F, Fe2+, N³-, He, S2', Co3+, Ar. 4. Two atoms have the electron configurations 1s2s2p6 and 1s22s2p63s1. The first ionization energy of one is 2080 kJ/mol, and that of the other is 496 kJ/mol. Pair each ionization energy with one of the given electron configurations. Justify your choice. 5. The bonds in beryllium hydride (BeH2) molecules are polar, and yet the dipole moment of the molecule is zero. Explain. 6. Predict and draw the molecular geometries (show bond angles) for these molecules: a. BH3 b. BrCl3 c. CF4

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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