Multiple Choice
Which of the following is the correct chemical formula for potassium permanganate?
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3. Chemical Reactions
Naming Ionic Compounds
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Which of the following is the correct name for the N^{3-} ion?
A
Nitronium
B
Nitrate
C
Nitrite
D
Nitride
Verified step by step guidance1
Identify the chemical species given: the ion is N^{3-}, which means a nitrogen atom carrying a 3- charge.
Recall that ions with a single element and a negative charge are called 'anions' and their names typically end with '-ide'.
Understand that 'Nitride' is the name given to the N^{3-} ion, which is the simple anion form of nitrogen with a 3- charge.
Recognize that 'Nitronium' (NO_2^+), 'Nitrate' (NO_3^-), and 'Nitrite' (NO_2^-) are polyatomic ions containing nitrogen and oxygen, not the simple nitrogen ion.
Therefore, the correct name for the N^{3-} ion is 'Nitride' because it is the simple nitrogen anion with a 3- charge.
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