AP EAMCET · Chemistry · d and f Block Elements
Identify the correct statement
- A \(\mathrm{Yb}^{2+}\) is an oxidant
- B \(\mathrm{Lu}^{3+}\) is paramagnetic
- C \(\mathrm{CrO}\) is basic
- D Brass is an alloy of \(\mathrm{Cu}, \mathrm{Sn}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{CrO}\) is basic
Step-by-step Solution
Detailed explanation
\(\mathrm{Yb}^{2+}=[\mathrm{Xe}] 4 \mathrm{f}^{14}\) Thus, it prefers to lose one electron as shielding is strong and it can form \(\mathrm{Yb}^{3+}\) so it acts as a reductant. \(\mathrm{Lu}^{3+}=[\mathrm{Xe}] 4 \mathrm{f}^{14}\) so it is diamagnetic. \(\mathrm{CrO}\) is basic…
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