Name the complex Ni`(PF_3)_4`

Explanation

To name the complex Ni(PF₃)₄, we will follow the systematic naming conventions for coordination compounds. Here’s a step-by-step breakdown of the process:

### Step 1: Identify the central metal ion
The central metal ion in the complex is Nickel (Ni).

### Step 2: Determine the oxidation state of the metal
In the complex Ni(PF₃)₄, PF₃ is a neutral ligand. Since there are four PF₃ ligands, we can calculate the oxidation state of Nickel (Ni) as follows:

Let the oxidation state of Ni be \( x \).
The oxidation state of PF₃ is 0 (since it is a neutral ligand).

Thus, the equation becomes:
\[ x + 4(0) = 0 \]
This simplifies to:
\[ x = 0 \]

So, the oxidation state of Nickel in this complex is 0.

### Step 3: Name the ligands
The ligand PF₃ is called phosphorous trifluoride. Since there are four of them, we use the prefix "tetra-" to indicate this quantity.

### Step 4: Combine the names
When naming coordination compounds, the ligands are named first, followed by the name of the metal. The metal is named with its oxidation state in Roman numerals in parentheses.

Since the oxidation state of Nickel is 0, we denote it as "nickel(0)".

### Step 5: Write the full name
Putting it all together, the name of the complex Ni(PF₃)₄ is:
**Tetrafluorophosphine nickel(0)**

### Final Answer
The complex Ni(PF₃)₄ is named **Tetrafluorophosphine nickel(0)**.

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