Consider the following element in in TI, Al, and Pb .The most stable oxidation states of elements with highest and lowes…
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Consider the following element in in TI, Al, and Pb .The most stable oxidation states of elements with highest and lowest first Ionisation enthalpies, respectively are:
Memory Based Question 28/Jan/25 Morning shift
✓ Correct answer: b)
+2 and +3
Explanation
The ionization energy depends upon the size and effective nuclear charge. when we move down the group I.E decreases and across the period the I.E increases.
The order of I.E is given as Pb>Tl >Al>In (Tl has more I.E than Al due to poor shielding of f orbital electrons)
The most stable oxidation state of Pb is +2, due to the inert pair effect, and In has a stable oxidation state is +3 .
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