Correct order of Lewis Acidic strength?
$BF_3 < BCl_3 < BBr_3 < BI_3$
$BF_3 > BCl_3 > BBr_3 > BI_3$
$BF_3 = BCl_3 = BBr_3 = BI_3$
$BF_3 > BCl_3 < BBr_3 > BI_3$
Which hydroxides of group $13$ are amphoteric in nature ?
Write balanced equations for:
$(i)$ $BF _{3}+ LiH \rightarrow$
$(ii)$ $B _{2} H _{6}+ H _{2} O \rightarrow$
$(\text { iii }) NaH + B _{2} H _{6} \rightarrow$
$(i v) H_{3} B O_{3} \stackrel{\Delta}{\longrightarrow}$
$( v ) Al + NaOH \rightarrow$
$( v i ) B _{2} H _{6}+ NH _{3} \rightarrow$
Aluminium chloride exists as a dimer, $Al_2Cl_6,$ in solid state as well as in solution of non-polar solvents such as benzene. When dissolved in water, it gives:
Which of the following does not exist in free form
Which of the following cation can not give borax bead test ?