Question:
Consider the following elements In, Tl, Al, Pb, and Ge. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are:
Consider the following elements In, Tl, Al, Pb, and Ge. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are:
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Ionisation enthalpy trends in the periodic table influence the common oxidation states of elements, particularly for p-block elements where the inert pair effect is significant.
Updated On: Aug 6, 2025
- +2 and +3
- +1 and +4
- +4 and +3
- +4 and +1
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The Correct Option is B
Solution and Explanation
Aluminum typically has the highest ionisation enthalpy among the given elements and commonly exhibits a +3 oxidation state. Lead, with the lowest ionisation enthalpy, shows stability in the +4 oxidation state due to inert pair effect.
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