Which of the following form dimeric halides
The structure of diborane contains:
How can you explain higher stability of $BCl_3$ as compared to $TlCl_3$?
The most abundant metal in the earth crust is
Given below are two statements :
Statement $I$: In group $13$, the stability of $+1$ oxidation state increases down the group.
Statement $II$: The atomic size of gallium is greater than that of aluminium.
In the light of the above statements, choose the most appropriate answer from the options given below: