Acedic strength of Boron trihalide are in order of
$B{F_3} < BC{l_3} < BB{r_3} < B{I_3}$
$B{I_3} < BB{r_3} < BC{l_3} < B{F_3}$
$BB{r_3} < BC{l_3} < B{F_3} < B{I_3}$
$B{F_3} < B{I_3} < BC{l_3} < BB{r_3}$
Give reasons:
$(i)$ Conc. $HNO _{3}$ can be transported in aluminium container.
$(ii)$ $A$ mixture of dilute $NaOH$ and aluminium pieces is used to open drain.
$(iii)$ Graphite is used as lubricant.
$(iv)$ Diamond is used as an abrasive.
$(v)$ Aluminium alloys are used to make aircraft body.
$(vi)$ Aluminium utensils should not be kept in water overnight.
$(vii)$ Aluminium wire is used to make transmission cables.
$Be ( OH )_2$ react with $Sr ( OH )_2$ to yield an ionic salt. Choose the incorrect option related to this reaction from the following:
If $B-Cl$ bond has a dipole moment, explain why $BCl_3$ molecule has zero dipole moment.
In the metallurgy of aluminium, cryolite is mixed in the molten state because it
Give name of group $13$ elements.