Multiple Choice
What is the net charge of an ion that has 11 protons and 10 electrons?
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2. Atoms & Elements
Ions
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What is the correct name for the ion S^{2-}?
A
Sulfonate ion
B
Sulfur ion
C
Sulfate ion
D
Sulfide ion
Verified step by step guidance1
Identify the element and its charge in the ion. Here, the ion is S^{2-}, which means it is a sulfur atom with a 2- charge.
Recall the naming conventions for common sulfur-containing ions: when sulfur gains two electrons to form an anion, it is called a sulfide ion.
Understand that 'sulfate' (SO_4^{2-}) and 'sulfonate' (RSO_3^{-}) are polyatomic ions containing sulfur and oxygen, so they are different from the simple sulfide ion.
Note that 'sulfur ion' is a vague term and not commonly used to name this specific ion.
Conclude that the correct name for S^{2-} is 'sulfide ion' based on the charge and element involved.
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