TS EAMCET · Chemistry · d and f Block Elements
Common oxidation state of \(f\)-block elements is III. The other stable oxidation states of \({ }^{63} \mathrm{Eu}\) and \({ }^{65} \mathrm{~Tb}\) are respectively
- A II, IV
- B \(|V| \mid\),
- C II, \(\mathrm{V}\)
- D \(V, II\)
Answer & Solution
Correct Answer
(A) II, IV
Step-by-step Solution
Detailed explanation
Common oxidation state of \(f\)-block elements is (+)3, but Eu and Tb can also show (+)2 and (+)4 oxidation states respectively because of \(4 f^7\) and \(4 f^9\) electrons in \(4 f\)-subshell respectively. Hence, option (1) is the correct answer.
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