Counting available electrons and Drawing a Lewis Structure: Count the total number of valence electrons in a molecule. This is just the sum of the number of valence electrons from each atom in the molecule. An easy way to determine the valence electrons is to look at the group number on the periodic table. For this worksheet, we abbreviate the total number of valence electrons as, ae, which stands for available electrons. Determine the value of ae for each molecule. Example: SICI, ae Si=4 ae =32 4- Cl = 4*7 = 28 | Total = 32 PCI, ae = de = SF. ae = For polyatomic ions the number of valence electrons is calculated in the same way as above but we must add electrons if the ion has a negative charge or subtract electrons for a positive charge. For example: SO- S= 6 40= 4* 6 = 24 -2 charge = 2 = 34 ae = 34 total NH, ae = ae = XeFs* CH. in the space to the right connect all of the atoms to the ac = Trial Structure: central atom and then make each atom follow the octet rule (duet rule for hydrogen).

Counting available electrons and Drawing a Lewis Structure: Count the total number of valence electrons in a molecule. This is just the sum of the number of valence electrons from each atom in the molecule. An easy way to determine the valence electrons is to look at the group number on the periodic table. For this worksheet, we abbreviate the total number of valence electrons as, ae, which stands for available electrons. Determine the value of ae for each molecule. Example: SICI, ae Si=4 ae =32 4- Cl = 47 = 28 | Total = 32 PCI, ae = de = SF. ae = For polyatomic ions the number of valence electrons is calculated in the same way as above but we must add electrons if the ion has a negative charge or subtract electrons for a positive charge. For example: SO- S= 6 40= 4 6 = 24 -2 charge = 2 = 34 ae = 34 total NH, ae = ae = XeFs* CH. in the space to the right connect all of the atoms to the ac = Trial Structure: central atom and then make each atom follow the octet rule (duet rule for hydrogen).

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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