In `Na_(2)[Fe(CN)_(5)NO]`, sodium nitroprusside:

Options

A. oxidation state of Fe is +2
B. this has `NO^(+)` as ligand
C. both are correct
D. none is correct

Answer

To solve the problem regarding the coordination compound `Na2[Fe(CN)5NO]`, also known as sodium nitroprusside, we will follow these steps:

### Step 1: Identify the Components of the Compound
The compound consists of sodium ions (Na⁺), a central metal ion (Fe), and ligands (CN⁻ and NO). The formula indicates that there are two sodium ions, five cyanide ligands, and one nitrosyl ligand.

**Hint:** Break down the compound into its individual ions and ligands to understand its structure.

### Step 2: Ionization of the Compound
When the compound ionizes, it can be represented as:
\[ Na^+ + [Fe(CN)_5NO]^{2-} \]
This shows that the coordination complex `[Fe(CN)5NO]` carries a charge of -2.

**Hint:** Write the ionization equation to visualize the charges and components clearly.

### Step 3: Determine the Oxidation State of Iron (Fe)
Let the oxidation state of iron be \( x \). The charges from the ligands must be considered:
- Each CN⁻ ligand contributes -1 charge, and there are 5 of them, contributing -5.
- The NO ligand is a positive ligand, contributing +1.

Setting up the equation based on the total charge of the complex:
\[ x + (-5) + (+1) = -2 \]
This simplifies to:
\[ x - 4 = -2 \]
Thus, solving for \( x \):
\[ x = +2 \]

**Hint:** Use the charge balance to find the oxidation state of the central metal ion.

### Step 4: Identify the Ligands
- The CN⁻ ligands are called "cyano" ligands.
- The NO ligand is called a "nitrosyl" ligand, and it is a positive ligand.

**Hint:** Familiarize yourself with common ligands and their names based on their charges.

### Step 5: Naming the Compound
When naming the compound, we follow the nomenclature rules:
1. Name the ligands in alphabetical order.
2. Indicate the number of each ligand using prefixes (e.g., penta for five).
3. Name the central metal ion and indicate its oxidation state in Roman numerals.

Thus, the name of the compound will be:
\[ \text{Sodium pentacyanidonitrosylferrate(II)} \]

**Hint:** Remember to follow the IUPAC naming conventions for coordination compounds.

### Final Answer
The name of the compound `Na2[Fe(CN)5NO]` is **Sodium pentacyanidonitrosylferrate(II)**.