AP EAMCET · Chemistry · Coordination Compounds
Which among the following is most paramagnetic?
- A \(\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\)
- B \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\)
- C \(\left[\mathrm{Cu}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\)
- D \(\left[\mathrm{Zn}\left(\mathrm{H}_2 \mathrm{O}\right)_2\right]^{2+}\)
Answer & Solution
Correct Answer
(B) \(\left[\mathrm{Fe}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{2+}\)
Step-by-step Solution
Detailed explanation
Paramagnetic character is based upon the presence of unpaired electrons in \(d\)-subshell. In these complex ions. (a) In \(\left[\mathrm{Cr}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\), \(\mathrm{Cr}\) is present as \(\mathrm{Cr}^{3+}(\) Oxidation number \(=+3)\)…
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