The correct IUPAC name of `[Pt(NH_(3))_(2)Cl_(2)]` is

Options

A. diamminedichloridoplatinum (II)
B. diamminedichloridoplatinum (IV)
C. diamminedichloridoplatinum(0)
D. dichloriododiammineplatinum (IV)

Answer

To determine the correct IUPAC name of the coordination compound `[Pt(NH₃)₂Cl₂]`, we can follow these steps:

### Step 1: Identify the Ligands
The complex consists of two types of ligands:
- Ammonia (NH₃), which is a neutral ligand.
- Chloride ions (Cl⁻), which are negatively charged ligands.

### Step 2: Count the Number of Each Ligand
- There are 2 ammonia ligands: `NH₃` (denoted as "diamine").
- There are 2 chloride ligands: `Cl` (denoted as "dichlorido").

### Step 3: Determine the Oxidation State of Platinum
Let the oxidation state of platinum (Pt) be \( x \).
- The charge from the 2 ammonia ligands is \( 2 \times 0 = 0 \) (since NH₃ is neutral).
- The charge from the 2 chloride ligands is \( 2 \times (-1) = -2 \).
- Since the overall charge of the complex is neutral, we can set up the equation:
\[ x + 0 - 2 = 0 \]
Solving for \( x \):
\[ x - 2 = 0 \implies x = +2 \]
So, the oxidation state of platinum is +2.

### Step 4: Assemble the Name
According to IUPAC naming conventions:
1. Ligands are named first in alphabetical order, regardless of their charge.
2. The name of the metal follows the ligands.
3. The oxidation state of the metal is indicated in Roman numerals in parentheses.

Putting this together:
- The ligands are "diamine" (for NH₃) and "dichlorido" (for Cl).
- The metal is "platinum" with an oxidation state of +2, which is represented as (II).

Thus, the full name is:
**Diamine dichlorido platinum(II)**

### Final Answer
The correct IUPAC name of `[Pt(NH₃)₂Cl₂]` is **diamino dichlorido platinum(II)**.