Consider the following elements ${\rm{In}},{\rm{Tl}},{\rm{Al}},{\rm{Pb}},{\rm{Sn}}$ and Ge. The most stable oxidation states of elements with highest and lowest first ionisation enthalpies, respectively, are
Select the correct option:
A
+1 and +4
B
+4 and +1
C
+2 and +3
D
+4 and +3
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
Solution
Among ${\rm{Al}},{\rm{In}},{\rm{Tl}},{\rm{Ge}},{\rm{Sn}},{\rm{Pb}}$, the metal having highest ${\rm{I}}{{\rm{E}}_1}$ is Ge and lowest ${\rm{I}}{{\rm{E}}_1}$ is In. Most stable oxidation state of Ge is +4 and In is +3.
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