Consider the following statements.
I. In bond line structural representation, only atoms specifically written are oxigen, chlorine, nitrogen etc.
II. In bond line structural representation line junctions denote carbon atoms bonded to appropriate number of hydrogens required to satisfy the valency of the carbon atoms.
Select the correct option.

Options

A. Only I
B. Only II
C. I and II
D. None of the above

Answer

To analyze the given statements regarding bond line structural representation, let's break down the information step by step.

### Step 1: Understand Bond Line Structure
Bond line structure is a simplified way of representing organic molecules. In this representation:
- Carbon atoms are represented by the ends and junctions of lines.
- Hydrogen atoms bonded to carbon are usually not explicitly drawn; their presence is implied based on the tetravalency of carbon.

### Step 2: Evaluate Statement I
The first statement claims that in bond line structural representation, only atoms specifically written are oxygen, chlorine, nitrogen, etc.
- This is **true**. In bond line structures, while carbon and hydrogen atoms are implied, heteroatoms (like oxygen, nitrogen, chlorine, etc.) must be explicitly written.

### Step 3: Evaluate Statement II
The second statement states that in bond line structural representation, line junctions denote carbon atoms bonded to the appropriate number of hydrogens required to satisfy the valency of the carbon atoms.
- This is also **true**. Each junction in the bond line structure represents a carbon atom, and the number of hydrogen atoms is implied based on the tetravalency of carbon. For example, if a carbon is bonded to one other atom, it will have three hydrogen atoms to satisfy its four bonds.

### Step 4: Conclusion
Both statements are correct based on the definitions and conventions used in bond line structural representations.

### Final Answer
Both statements are correct. Therefore, the correct option is **Option 3**.

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