The IUPAC nomenclature for the complex `Na[PtBrCl(NO_(2))(NH_(3))]` is:

Options

A. Sodium amminechlorobromonitro-N-platinum (II)
B. Sodium nitrochlorobromoammine-N-platinate(II)
C. Sodium amminebromochloronitro-N-Platinate(II)
D. Sodium amminebromochloronitro-N-platinum(II)

Answer

To determine the IUPAC nomenclature for the complex `Na[PtBrCl(NO2)(NH3)]`, we will follow a systematic approach. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Components of the Complex
The complex consists of:
- A sodium ion (Na⁺)
- A platinum coordination center (Pt)
- Ligands: bromide (Br⁻), chloride (Cl⁻), nitro (NO₂⁻), and amine (NH₃)

### Step 2: Determine the Oxidation State of Platinum
To find the oxidation state of platinum (Pt), we can set up an equation based on the charges of the ligands:
- Let the oxidation state of Pt be \( x \).
- The charges of the ligands are:
- Br: -1
- Cl: -1
- NO₂: -1 (as it is a nitro ligand)
- NH₃: 0 (neutral)

The overall charge of the coordination complex is -1 (since it is balanced by the Na⁺ ion). Thus, we can write the equation:
\[ x - 1 - 1 - 1 = -1 \]
\[ x - 3 = -1 \]
\[ x = +2 \]

So, the oxidation state of platinum is +2.

### Step 3: Naming the Ligands
We will name the ligands in alphabetical order, regardless of their charge:
1. Amine (NH₃) - named as "amine"
2. Bromo (Br) - named as "bromo"
3. Chloro (Cl) - named as "chloro"
4. Nitro (NO₂) - named as "nitro"

### Step 4: Arrange the Ligands Alphabetically
When arranging the ligands alphabetically, we consider the prefixes:
- Amine (A)
- Bromo (B)
- Chloro (C)
- Nitro (N)

Thus, the order is:
1. Amine
2. Bromo
3. Chloro
4. Nitro

### Step 5: Naming the Metal with the Correct Suffix
Since the coordination sphere has a negative charge, we will use the suffix "-ate" for the metal:
- Platinum becomes "platinate" when it has a negative charge.

### Step 6: Combine All Parts to Form the Complete Name
Now we can combine all parts:
- Start with the cation: Sodium
- Follow with the ligands in alphabetical order: amine, bromo, chloro, nitro
- End with the metal name: platinate

Thus, the complete IUPAC name is:
**Sodium amine bromo chloro nitro platinate**

### Final Answer
The IUPAC nomenclature for the complex `Na[PtBrCl(NO2)(NH3)]` is:
**Sodium amine bromo chloro nitro platinate**

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