Answered

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Which of the following is NOT a multivalent ion?

A. [tex]\( Ag^{+} \)[/tex]
B. [tex]\( Cr^{3+} \)[/tex]
C. [tex]\( Sb^{5+} \)[/tex]
D. [tex]\( Cu^{+} \)[/tex]

Sagot :

GinnyAnswer
To determine which of the given ions is NOT a multivalent ion, let's investigate the common oxidation states for each:

- Ag⁺ (Silver):
- Silver typically exists in the +1 oxidation state and is not known to commonly exist in other oxidation states.
- Therefore, it is not multivalent.

- Cr³⁺ (Chromium):
- Chromium can exist in several oxidation states, including +2, +3, and +6.
- Thus, Chromium is multivalent.

- Sb⁵⁺ (Antimony):
- Antimony can exist in multiple oxidation states, including +3 and +5.
- Therefore, Antimony is multivalent.

- Cu⁺ (Copper):
- Copper typically exists in +1 and +2 oxidation states.
- This makes Copper a multivalent ion.

Given this, the ion that is NOT multivalent among the provided options is:

[tex]\[ \boxed{Ag^+} \][/tex]

Hence, the correct answer is:
[tex]\[ Ag^+ \][/tex]
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