Multiple Choice
Which of the following represents the valence electron configuration for a sulfur (S) atom?
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10. Periodic Properties of the Elements
Valence Electrons of Elements
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How many valence electrons does the sulfide ion, S^{2-}, have?
A
10
B
8
C
2
D
6
Verified step by step guidance1
Identify the element in question, which is sulfur (S). Sulfur is in group 16 of the periodic table, so it has 6 valence electrons in its neutral state.
Understand that the sulfide ion, S^{2-}, means sulfur has gained 2 extra electrons, giving it a charge of -2.
Add the 2 extra electrons to the original 6 valence electrons of sulfur to account for the charge on the ion.
Write the expression for the total valence electrons: $6 + 2 = 8$ valence electrons.
Conclude that the sulfide ion, S^{2-}, has 8 valence electrons.
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