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Write a Lewis symbol for each atom or ion.a. S2-b. Mgc.

Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro ISBN: 9780321809247 1

Solution for problem 38E Chapter 9

Chemistry: A Molecular Approach | 3rd Edition

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Chemistry: A Molecular Approach | 3rd Edition | ISBN: 9780321809247 | Authors: Nivaldo J. Tro

Chemistry: A Molecular Approach | 3rd Edition

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Problem 38E

Write a Lewis symbol for each atom or ion.

a. S2-

b. Mg

c. Mg2+

d. P

Step-by-Step Solution:

Solution 38E Step 1 of 5 Lewis structures: Valence electrons of the main group elements are represented as the dots surrounding the symbol of the element in Lewis structures of atoms or ions. Step 2 of 5 2 2 6 a) Sulphur (S) has atomic number= 16, thus it has this electronic configuration: 1s 2s 2p 2 4 2 2 6 2 6 3s 3p , but if it gain two electrons its new electronic configuration will be: 1s 2s 2p 3s 3p When Sulphur does that, it completes its outer shell because it has eight electrons, but it becomes an anion because it acquires 2 negative charges in form of electrons. 2- In S structure we have to represent eight dots and a 2– formal charge out of the brackets Step 3 of 5 2 2 6 b) Atomic number of Magnesium (Mg) is 12, thus it has this electronic configuration 1s 2s 2p 2 3s . Thus it has two electrons in his valence shell (the two locate in 3s orbital). Hence its Lewis structure is

Step 4 of 5

Chapter 9, Problem 38E is Solved
Step 5 of 5

Textbook: Chemistry: A Molecular Approach
Edition: 3
Author: Nivaldo J. Tro
ISBN: 9780321809247

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Write a Lewis symbol for each atom or ion.a. S2-b. Mgc.

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