TS EAMCET · Chemistry · d and f Block Elements
Statement (I) \(\mathrm{Co}^{2+}\) has higher magnetic moment than \(\mathrm{Cr}^{3+}\). Statement (II) Ionisation enthalpies of Ce, Pr and \(\mathrm{Nd}\) are higher than \(\mathrm{Th}, \mathrm{Pa}, \mathrm{U}\). Which of the following is correct?
- A Both (l) and (II) are not correct
- B Both (I) and (II) are correct
- C (l) is correct but (II) is not correct
- D (l) is not correct but (II) is correct
Answer & Solution
Correct Answer
(D) (l) is not correct but (II) is correct
Step-by-step Solution
Detailed explanation
Statement (I) is not correct, as magnetic moment of \(\mathrm{Cr}^{3+}\) is more than of \(\mathrm{CO}^{2+}\). But, statement (II) is correct, as I.P. of Ce, Pr and Nd are higher than th, Pa and U. Thus, the correct option is (4).
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