1. | The relative stability of group 13 elements in +1 oxidation state varies as : Al < Ga < In < Tl. |
2. | Boron trioxide is acidic, aluminium and gallium trioxides are amphoteric while indium and thallium trioxides are basic. |
3. | The hybridisation of Al in \(\left[\mathrm{Al}\left(\mathrm{H}_2 \mathrm{O}\right)_6\right]^{3+}\) is \(\text{d}^2\text{ sp}^3.\) |
4. | Two isotopes of Boron, namely \(^{10}\!\mathrm{~B}(19 \%)\) and \(^{11}\! \mathrm{~B}(81 \%)\) are known. |
1. | Ga | 2. | In |
3. | Al | 4. | B |
Which of the following is the correct statement?
1. Ga+ is more stable than ln+.
2. Al+ is more stable than ln+.
3. Ga+ is more stable than Al+.
4. Al+ is more stable than Ga+.
Aluminium chloride in acidified aqueous solution forms a complex 'A'.
The formula of A and hybridisation state of Al in 'A' is respectively:
1. [Al(H2O)6]3+, sp3d2
2. [Al(H2O)4]3+, sp3
3. [Al(H2O)4]3+, dsp2
4. [Al(H2O)]3+, d2sp3