A: `CH_(3)COONa` is an organometallic compound,
R:  `CH_(3)COONa`is organic compound and Na is transition metal.

Options

A. If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
B. If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2).
C. ) If Assertion is true statement but Reason is false, then mark (3).
D. If both Assertion and Reason are false statements, then mark (4)

Answer

To analyze the assertion and reason provided in the question, we will break down the statements and evaluate their validity step by step.

### Step 1: Understanding the Assertion
The assertion states that `CH₃COONa` (sodium acetate) is an organometallic compound.

- **Definition of Organometallic Compounds**: Organometallic compounds are defined as compounds that contain a bond between a carbon atom and a metal atom.
- **Structure of Sodium Acetate**: The structure of sodium acetate can be represented as CH₃COO⁻Na⁺. Here, the sodium ion (Na⁺) is associated with the acetate ion (CH₃COO⁻), but it is not directly bonded to the carbon atom. Instead, sodium is bonded to the oxygen atom of the acetate ion.

**Conclusion for Assertion**: Since sodium is not directly bonded to carbon, the assertion is **false**.

### Step 2: Understanding the Reason
The reason states that `CH₃COONa` is an organic compound and that sodium is a transition metal.

- **Organic Compound**: Sodium acetate is derived from acetic acid (CH₃COOH) and is indeed classified as an organic compound. Therefore, this part of the reason is **true**.
- **Transition Metal**: Sodium (Na) is classified as an alkali metal, not a transition metal. Transition metals are defined as elements that have partially filled d orbitals. Sodium has the electronic configuration of 1s² 2s² 2p⁶ 3s¹, which does not include d orbitals.

**Conclusion for Reason**: While sodium acetate is an organic compound, the statement that sodium is a transition metal is **false**. Therefore, the reason is **partially true**.

### Final Conclusion
- **Assertion**: False
- **Reason**: False (because sodium is not a transition metal)

### Answer to the Question
Both the assertion and the reason are false.