Match List $I$ with List $II$. Choose the correct answer from the options given below:
List $-I$ | List $-II$ |
$A.$ Melting point $[\mathrm{K}]$ |
$I.$ $\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}>\mathrm{Al}>\mathrm{B}$ |
$B.$ Ionic Radius $\left[\mathrm{M}^{+3} / \mathrm{pm}\right]$ |
$II.$ $\mathrm{B}>\mathrm{Tl}>\mathrm{Al} \approx \mathrm{Ga}>\mathrm{In}$ |
$C.$ $\Delta_{\mathrm{i}} \mathrm{H}_1 $ $ [\mathrm{~kJ} \mathrm{~mol}^{-1}]$ | $III.$ $\mathrm{Tl}>\mathrm{In}>\mathrm{Al}>\mathrm{Ga}>\mathrm{B}$ |
$D.$ Atomic Radius $[pm]$ | $IV.$ $\mathrm{B}>\mathrm{Al}>\mathrm{Tl}>\mathrm{In}>\mathrm{Ga}$ |
$A-III, B-IV, C-I, D-II$
$A-II, B-III, C-IV, D-I$
$ A-IV, B-I, C-II, D-III$
$A-I, B-II, C-III, D-IV$
Which of the following is correct ?
$(BN)_n$ exists in
Given below are two statements :
Statement $I$ : Boron is extremely hard indicating its high lattice energy
Statement $II$ : Boron has highest melting and boiling point compared to its other group members.
In the light of the above statements, choose the most appropriate answer from the options given below
When orthoboric acid $({H_3}B{O_3})$ is heated, the residue left is
When $AlCl_3·6H_2O$ is strongly heated, then it forms