Correct Lewis acidity order of $BX_3$ is
$BF_3 < BCl_3 < BBr_3 < BI_3$
$BF_3 > BCl_3 > BBr_3 > BI_3$
$BCl_3< BBr_3 < BI_3 < BF_3$
$BF_3 < BI_3 < BBr_3 < BCl_3$
Inorganic benzene is
In the following sets of reactants which two sets best exhibit the amphoteric characters of $Al_2O_3. xH_2O$ ?
Set $1$: $Al_2O_3 .xH_2O\, (s)$ and $OH^-(aq)$
Set $2$: $Al_2O_3 .xH_2O\, (s)$ and $H_2O\,(l)$
Set $3$: $Al_2O_3 .xH_2O\, (s)$ and $H^+(aq)$
Set $4$: $Al_2O_3 .xH_2O\, (s)$ and $NH_3(aq)$
Boric acid is an acid because its molecule
Aluminium chloride exists as dimer, $Al_2Cl_6$ in solid state as well as in soluiton of non-polar solvents such as $C_6H_6.$ When dissolved in water it gives :
Which of the following equation is not correctly matched