AP EAMCET · Chemistry · d and f Block Elements
Which of the following lanthanoids have [Xe] \(4 f^x 5 \mathrm{~d}^1 6 \mathrm{~s}^2\) configuration in their ground state? \((x=1-14)\)
- A \(\mathrm{Pr}, \mathrm{Tb}, \mathrm{Yb}\)
- B \(\mathrm{Ce}, \mathrm{Yb}, \mathrm{Lu}\)
- C \(\mathrm{Ce}, \mathrm{Gd}, \mathrm{Lu}\)
- D \(\mathrm{Gd}, \mathrm{Tb}, \mathrm{Lu}\)
Answer & Solution
Correct Answer
(C) \(\mathrm{Ce}, \mathrm{Gd}, \mathrm{Lu}\)
Step-by-step Solution
Detailed explanation
\(\mathrm{Ce}, \mathrm{Gd}\) and Lu have \([\mathrm{Xe}] 4 \mathrm{f}^{\mathrm{x}} 5 \mathrm{~d}^1 6 \mathrm{~s}^2\) configuration.…
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