Hybridisation and geometry of [Ni(CN)$_4$]$^{2-}$ are
Match List I with List II.
The final product in the following reaction Y is:
A tetrapeptide is made of naturally occurring alanine, serine, glycine, and valine. If the C-terminal amino acid is alanine and the N-terminal amino acid is chiral, the number of possible sequences of the tetrapeptide is: