Which of the following does not depict the correct , name of the compound ?

Options

A. `K_(2) [Zn(OH)_(4)]` : Potassium tetrahydroxozincate (II)
B. `[Co(NH_(3))_(5)CO_(3)]Cl:` Pentaammine carbonatochlorocobaltate(III)
C. `Na_(3)[Co(NO_(2))_(6)] :` Sodium hexanitrocobaltate (III)
D. `K_(3)[Cr(CN)_(6)]`: Potassium hexacyanochromate(III)

Explanation

To determine which of the following coordination compounds does not have the correct name, we will analyze each option step by step.

### Step 1: Analyze the first compound - K2Zn(OH)4
- **Formula**: K2Zn(OH)4
- **Cation**: K+ (Potassium)
- **Anion**: Zn(OH)4^2- (Zincate)
- **Naming**: Since the anion is derived from hydroxide, it will end with "ate". The correct name is potassium tetrahydroxozincate(II).
- **Conclusion**: This name is correct.

### Step 2: Analyze the second compound - [Co(NH3)5Cl]Cl2
- **Formula**: [Co(NH3)5Cl]Cl2
- **Cation**: [Co(NH3)5Cl]^2+ (Cobalt complex)
- **Anion**: Cl^-
- **Naming**: The cation is a complex ion and should not end with "ate". The correct name is pentaamminechlorocobalt(III) chloride.
- **Conclusion**: This name is incorrect because it should not end with "ate".

### Step 3: Analyze the third compound - Na3[Co(NO2)6]
- **Formula**: Na3[Co(NO2)6]
- **Cation**: Na+ (Sodium)
- **Anion**: [Co(NO2)6]^3- (Cobalt complex)
- **Naming**: The anion is derived from nitro, and since it is a complex anion, it will end with "ate". The correct name is sodium hexanitrocobalt(III).
- **Conclusion**: This name is correct.

### Step 4: Analyze the fourth compound - K3[Cr(CN)6]
- **Formula**: K3[Cr(CN)6]
- **Cation**: K+ (Potassium)
- **Anion**: [Cr(CN)6]^3- (Chromate complex)
- **Naming**: The anion is derived from cyanide, and it will end with "ate". The correct name is potassium hexacyanochromate(III).
- **Conclusion**: This name is correct.

### Final Conclusion:
The second compound, [Co(NH3)5Cl]Cl2, has the incorrect name. It should be named pentaamminechlorocobalt(III) chloride, not ending with "ate".