Pseudohalogens or halogenides are complex molecules which behaves like halogen s. Among the following list `CN^(Theta)` (cyanide), `OCN^(Theta)` (cyanate), `SCN^(Theta)` (thio-cyanate), `SeCN^(Theta)` (selenocyanate), `TeCN^(Theta)` (tellurocyanate), `ONC^(Theta)` (isocyanate), `N_(3)^(Theta)` (azide), cyanogen `(CN)_(2)` oxycyanogen `(OCN)_(2)`, thiocyanogen `(SCN)_(2)`, telluroyanogen `(TeCN)_(2)`, azidecabon dislphide `(SCN N_(3),CICN, BrCN, ICN, ICI, IF_(7), IF_(5), I_(3)^(Theta), ICI_(2)^(Theta),I^(Theta), I^(o+), I_(3)^(o+))`.
a. Which are interpsedohalogents ?
b. Which are interhalogens or their anions ?
c. Which are polyhalides ?
d. Which are neither (a), (b), (c) or pseudohalogen or their anions ?
e. Which are pseudohalogens of their anions ?

Explanation

(a) `CICN, BeCN, ICN`
(b) `ICI, IF_(7), IF_(5)`
(c ) `ICI_(2)^(Theta), I_(3)^(Theta)`
(d) `I^(Theta),I^(o+),I^(3+)`