Multiple Choice
What is the oxidation state of the central metal in [Cr(en)3]Cl3?
6. Chemical Quantities & Aqueous Reactions
Calculate Oxidation Numbers
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Which of the following elements would have the lowest oxidation number?
A
Indium, In
B
Strontium, Sr
C
Argon, Ar
D
Manganese, Mn
Verified step by step guidance1
Understand that the oxidation number of an element in its elemental form is always zero. This is a key concept in determining oxidation numbers.
Recognize that Argon (Ar) is a noble gas and typically does not form compounds, meaning it usually has an oxidation number of zero.
Consider the typical oxidation states of the other elements: Indium (In) often has +3, Strontium (Sr) typically has +2, and Manganese (Mn) can have multiple oxidation states, but commonly +2, +4, +6, or +7.
Compare these oxidation numbers: Argon (Ar) with zero, Indium (In) with +3, Strontium (Sr) with +2, and Manganese (Mn) with various positive values.
Conclude that Argon (Ar), being a noble gas with an oxidation number of zero, has the lowest oxidation number among the given elements.
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