JEE Mains · Chemistry · STD 11 -p-Block elements - I
Consider the following elements \(\mathrm{In}, \mathrm{Tl}, \mathrm{Al}, \mathrm{Pb}, \mathrm{Sn}\) and Ge .
The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively are _______.
- A \(+4\) and +1
- B +1 and +4
- C +4 and +3
- D +2 and +3
Answer & Solution
Correct Answer
(C) +4 and +3
Step-by-step Solution
Detailed explanation
Among \(\mathrm{Al}, \mathrm{In}, \mathrm{Tl}, \mathrm{Ge}, \mathrm{Sn}, \mathrm{Pb}\), the metal having highest \(\mathrm{IE}_1\) is Ge and lowest \(\mathrm{IE}_1\) is In . Most stable oxidation state of Ge is +4 and In is +3 .
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