Consider the following statements for diborane
$1.$ Boron is approximately $sp^3$ hybridized
$2.$ $B-H-B$ angle is $180^o$
$3.$ There are two terminal $B-H$ bonds for each boron atom
$4.$ There are only $12$ bonding electrons available
Of these statements
$1,\, 3$ and $4$ are correct
$1,\, 2$ and $3$ are correct
$2,\, 3$ and $4$ are correct
$1,\, 2$ and $4$ are correct
Assertion : Both $Be$ and $Al$ can form complexes such as $BeF_4^{2-}$ and $AlF_6^{3-}$ respectively, $BeF_6^{3-}$ is not formed.
Reason : In case of $Be$, no vacant $d-$ orbitals are present in its outermost shell.
Anhydrous aluminium chloride $(Al_2Cl_6)$ is covalent compound and soluble in water giving
In $IIIA$ group, $Tl$ (thalium) shows $+1$ oxidation state while other members show $+3$ oxidation state. Why
Identify the reaction which does not liberate hydrogen
Which match is not incorrect ?