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JEE CHEMISTRY MCQ: d & f- BLOCK ELEMENTS
1
Medium
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Analyzing
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Assertion : 1st ionisation potential of mercury is greater than cadmium
Reason : Hg has stable electronic configuration
Reason : Hg has stable electronic configuration
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Correct option: B
If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion.
Option B (If both Assertion & Reason are True but Reason is not a correct explanation of the Assertion) is correct because while both statements are true, the stable electronic configuration is not the primary reason for mercury's higher ionization potential.
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Statement-II: Both ions are having same number of unpaired electrons. The most common oxidation state of Lanthanoid
elements is +3. Which of the following is likely to
also form other oxidation state? A mixture of and is called