Which of the following is known as inorganic benzene
Borazine
Boron nitride
$p$ - dichlorobenzene
Phosphonitrilic acid
Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$:
Assertion $A$ : The stability order of +$1$ oxidation state of $\mathrm{Ga}$, In and $\mathrm{Tl}$ is $\mathrm{Ga}<\mathrm{In}<\mathrm{Tl}$.
Reason $R$ : The inert pair effect stabilizes the lower oxidation state down the group.
In the light of the above statements, choose the correct answer from the options given below :
Which match is not incorrect ?
Explain physical characteristic of group $13$ elements.
Correct Lewis acidity order of $BX_3$ is
$BCl_3$ does not exist as dimer but $BH_3$ exist as dimer $(B_2H_6)$ becuase