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The IUPAC name for K(2)[Cr(CN)(2)O(2)(O(...

The IUPAC name for `K_(2)[Cr(CN)_(2)O_(2)(O_(2))NH_(3)]` is:

A

Potassium amminedicyanotetraoxo chromium (III)

B

Potassium amminedicyanodioxygendioxo chromate (IV)

C

Potassium amminedicyanosuperoxoperoxo chromate (III)

D

Potassium amminedicyanodioxoperoxo chromate (VI)

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The correct Answer is:
To determine the IUPAC name for the coordination compound \( K_2[Cr(CN)_2O_2(O_2)NH_3] \), we can follow these steps: ### Step 1: Identify the components of the coordination compound The given compound consists of: - Cation: \( K^+ \) (Potassium) - Anion: \( [Cr(CN)_2O_2(O_2)NH_3]^{2-} \) ### Step 2: Identify the ligands In the coordination entity \( [Cr(CN)_2O_2(O_2)NH_3]^{2-} \), we have: - \( CN^- \) (cyano) - a bidentate ligand - \( O_2^{2-} \) (peroxo) - a bidentate ligand - \( O^{2-} \) (oxo) - a monodentate ligand - \( NH_3 \) (ammine) - a neutral ligand ### Step 3: Determine the oxidation state of the central metal (Cr) Let the oxidation state of Cr be \( x \). - The charges contributed by the ligands: - \( CN^- \): 2 ligands contribute \( -2 \) - \( O_2^{2-} \): 2 ligands contribute \( -2 \) - \( O^{2-} \): 2 ligands contribute \( -2 \) - \( NH_3 \): 0 (neutral) Setting up the equation: \[ x + (-2) + (-2) + (-2) + 0 = -2 \] \[ x - 6 = -2 \implies x = +6 \] ### Step 4: Name the ligands in alphabetical order When naming ligands, we list them in alphabetical order, ignoring any prefixes that indicate the number of each ligand: 1. Amine (NH3) - "ammine" 2. Cyano (CN) - "cyano" 3. Oxo (O) - "oxo" 4. Peroxo (O2) - "peroxo" ### Step 5: Use the appropriate prefixes for the ligands - "di-" for two cyano ligands: "dicyano" - "di-" for two oxo ligands: "dioxo" - "per-" for one peroxo ligand: "peroxo" ### Step 6: Combine the names and include the metal with its oxidation state Putting it all together, we write the name as follows: - Cation: Potassium (from \( K^+ \)) - Ligands in alphabetical order with prefixes: - "ammine" - "dicyano" - "dioxo" - "peroxo" - Metal with oxidation state: "chromate" (for chromium) with oxidation state \( +6 \). ### Final IUPAC Name The complete IUPAC name for the compound \( K_2[Cr(CN)_2O_2(O_2)NH_3] \) is: **Potassium dicyano dioxo peroxoamminechromate(VI)**
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VK JAISWAL ENGLISH-CO-ORDINATION COMPOUNDS-LEVEL 2
  1. The IUPAC name for K(2)[Cr(CN)(2)O(2)(O(2))NH(3)] is:

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  2. Which of the following ligand does not as pi-acid ligand?

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  3. If EAN of central metal cation M^(2+) in an non-chelating complex is 3...

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  4. [Mn(CO)(4)NO] is diamagnetic because:

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  5. Choose the correct option regarding the following complex compound whi...

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  6. If CO ligands are substituted by NO in respective neutral carbonyl com...

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  7. Which of the following species can act as reducing agent ?

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  8. If Delta(0) lt P, the correct electronic configuration for d^(4) syste...

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  9. Which of the following statement is not correct?

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  10. Give the correct of initials T or F for following statements. Use T if...

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  11. match List-I with list-II and select the correct answer using the code...

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  12. The value of 'spin only' magnetic moment for one of the following conf...

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  13. The correct order of magnetic moments (spin values in B.M.) among is:

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  14. Which of the following statements is incorrect?

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  15. Set of d-orbitals which is used by central metal during formation of M...

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  16. FeSO(4) is a very good absorber for NO, the new compound formed by thi...

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  17. A [M(H(2)O)(6)]^(2+) complex typically absorbs at around 600 n. it is ...

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  18. Given that the energy of the photons of different colours decreases in...

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  19. The CFSE for octahedral [CoCl(6)]^(4-) is 18,000 cm^(-1) . The CFSE fo...

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  20. MnO(4)^(-) is of intense pink colour, though Mn is in(+7) oxidation st...

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  21. In which of the following complex ion the value of magnetic moment (sp...

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