Percentage of $s-$character in $sp^3$ hybrid orbital is (in $\%$)

Which of the following is a linear molecule?

The hybridization of the central atom in $ICl^{+}_2$ is

What is the hybridization of the central $I$ atom in the $I_3^-$ ion?

What is the type of hybridization of $N$ in $NH_3$?

In which of the following molecules,the number of lone pairs of electrons on the central atom and the number of $d$-orbitals involved in the hybridisation of the central atom are the same?