Chemistry · 2021
JEE Main · 4 August 2021, Shift 1 · Q57
Among the following species, the number of species with oxidation state of Fe in +3 is \ \ \ \. A. B. [ Fe_3 O ( CH_3 COO )_6( H_2 O )_3]^+ C. [ Fe (…
Among the following species, the number of species with oxidation state of Fe in +$\displaystyle 3$ is \_\_\_\_.
A. 
B. $\displaystyle \left[\mathrm{Fe}_3 \mathrm{O}\left(\mathrm{CH}_3 \mathrm{COO}\right)_6\left(\mathrm{H}_2 \mathrm{O}\right)_3\right]^{+}$
C. $\displaystyle \left[\mathrm{Fe}(\mathrm{CN})(\mathrm{CO})\left(\mathrm{NH}_3\right)_3\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{+}$
B. $\displaystyle \left[\mathrm{Fe}_3 \mathrm{O}\left(\mathrm{CH}_3 \mathrm{COO}\right)_6\left(\mathrm{H}_2 \mathrm{O}\right)_3\right]^{+}$
C. $\displaystyle \left[\mathrm{Fe}(\mathrm{CN})(\mathrm{CO})\left(\mathrm{NH}_3\right)_3\left(\mathrm{H}_2 \mathrm{O}\right)\right]^{+}$Official answer
2
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JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.