The major products A and B for the following reactions are, respectively:

Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect ?

(The Bohr radius is represented by a₀)

The maximum possible denticities of a ligand given below towards a common transition and inner-transition metal ion, respectively, are :

The correct statements among I to III regarding group 13 element oxides are,
(I) Boron trioxide is acidic.
(II) Oxides of aluminium and gallium are amphoteric.
(III) Oxides of indium and thalliumare basic.