Sodiumnitroso penta cyano ferrate(II) Na2[Fe(CN)5NO]
THIS NAME HOW iS C0RRECT ALPHABETICALY
The correct name of the given complex that is Na2[Fe(CN)5NO] should be Sodium pentacyanonitrosoniumferrate (II). Sodium is named first as it is the cation followed by the name of the complex anion. Since the central metal ion (that is iron) is a part of the anion, therefore its name ends in ate. Also, as NO is a cationic ligand, therefore it is named nitrosonium.