Consider the following elements In, Tl, Al, Pb, Sn and Ge. The most stable oxidation states

Question

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

(1) +2 and +3

(2) +4 and +3

(3) +4 and +1

(4) +1 and +4

Answer 1

Correct option is : (2) +4 and +3

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.