객관식
Which of the following is the correct formula for the nitride ion?
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3. Chemical Reactions
Polyatomic Ions
객관식
Which of the following ions is an oxyanion?
A
NO_3^-
B
SO_4^{2-}
C
NH_4^+
D
CN^-
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검증된 단계별 안내1
Step 1: Understand the definition of an oxyanion. An oxyanion is a polyatomic ion that contains oxygen atoms bonded to another element (usually a nonmetal).
Step 2: Examine each ion given in the problem to see if it contains oxygen atoms bonded to another element:
- \(\mathrm{NO_3^-}\) contains nitrogen and oxygen atoms, so it is an oxyanion.
- \(\mathrm{SO_4^{2-}}\) contains sulfur and oxygen atoms, so it is also an oxyanion.
- \(\mathrm{NH_4^+}\) contains nitrogen and hydrogen atoms but no oxygen, so it is not an oxyanion.
- \(\mathrm{CN^-}\) contains carbon and nitrogen atoms but no oxygen, so it is not an oxyanion.
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