Question

The IUPAC name of K₃[Co(NO₂)₅] is ______.

विकल्प

• potassium (I) hexanitrocobaltate (II)

• potassium (III) hexanitrocobaltate (III)

• potassium hexanitrocobalt (0)

• potassium hexanitrocobaltate (III)

Answer 1

The IUPAC name of K₃[Co(NO₂)₅] is potassium hexanitrocobaltate (III).

Explanation:

The IUPAC name is potassium pentanitritocobalt(III). This name reflects:

• Cobalt in the +3 oxidation state (Co³⁺).
• Five NO²⁻ (nitrito) ligands.
• Three potassium ions (K⁺) balance the charge outside the coordination sphere.