- Home
- Standard 11
- Chemistry
p-Block Elements - I
easy
In some of the reactions thallium resembles aluminium, whereas in others it resembles with group $1$ metals. Support this statement by giving some evidences.
Option A
Option B
Option C
Option D
Solution
Thallium belongs to group $13$ of the periodic table. The most common oxidation state for this group is $+3 .$ However, heavier members of this group also display the $+1$ oxidation state. This happens because of the inert pair effect. Aluminium displays the $+3$ oxidation state and alkali metals display the $+1$ oxidation state. Thallium displays both the oxidation states. Therefore, it resembles both aluminium and alkali metals.
Thallium, like aluminium, forms compounds such as $TlCl _{3}$ and $Tl _{2} O _{3}$. It resembles alkali metals in compounds $Tl _{2} O$ and $TlCl$.
Standard 11
Chemistry
