`CH_(3)-CH_(2)=N=O and CH_(3)-CH=N-OH` are:

Options

A. Functional group isomer
B. Tautomer
C. Position isomer
D. Not an isomer

Answer

To determine the relationship between the compounds CH₃-CH₂=N=O and CH₃-CH=N-OH, we will analyze their structures and definitions of isomerism.

### Step 1: Identify the Compounds
The two compounds given are:
1. **CH₃-CH₂=N=O** (let's call this Compound A)
2. **CH₃-CH=N-OH** (let's call this Compound B)

### Step 2: Determine the Molecular Formula
Both compounds have the same molecular formula, which is C₂H₅N₁O₁. This is important because isomers typically have the same molecular formula but different structural formulas.

### Step 3: Analyze Functional Groups
- **Compound A** has a double bond between nitrogen and oxygen (N=O), indicating it is an oxime.
- **Compound B** has a hydroxyl group (-OH) attached to nitrogen, indicating it is an amine or oxime.

### Step 4: Check for Interconvertibility
To see if these compounds can interconvert, we can look at the functional groups:
- Compound A can undergo tautomerization to form Compound B. This involves the migration of a hydrogen atom and the shifting of double bonds.

### Step 5: Define the Type of Isomerism
Based on the definitions:
- **Functional Group Isomers**: Compounds with the same molecular formula but different functional groups.
- **Tautomers**: Structural isomers that are readily interconvertible, typically involving the migration of a hydrogen atom and a change in bonding.
- **Positional Isomers**: Compounds that have the same functional group but differ in the position of that functional group on the carbon skeleton.

### Conclusion
Since Compound A and Compound B can interconvert through tautomerization, they are classified as **Tautomers**.

### Final Answer
The compounds CH₃-CH₂=N=O and CH₃-CH=N-OH are **Tautomers**.

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