Choose the correct code of characteristics for the given order of hybrid orbitals of same atom,
`sp lt sp^(2) lt sp^(3)`
(i) Electrongativity (ii) Bond angle between same hybrid orbitals
(iii) Size (iv) Energy level

Options

A. ii, iii and iv
B. iii, iv
C. ii and iv
D. I, ii, iii and iv

Answer

To solve the question regarding the characteristics of the hybrid orbitals in the order \( sp < sp^2 < sp^3 \), we will analyze each characteristic one by one.

### Step-by-Step Solution:

1. **Electronegativity**:
- Electronegativity is influenced by the s-character of the hybrid orbitals. The more s-character an orbital has, the higher its electronegativity.
- The order of s-character is:
- \( sp \) (50% s-character) > \( sp^2 \) (33% s-character) > \( sp^3 \) (25% s-character).
- Therefore, the correct order for electronegativity is:
\[ \text{Electronegativity: } sp > sp^2 > sp^3 \]
- Since the question gives \( sp < sp^2 < sp^3 \), this option is incorrect.

2. **Bond Angle Between Same Hybrid Orbitals**:
- The bond angles for the hybrid orbitals are:
- \( sp \): 180°
- \( sp^2 \): 120°
- \( sp^3 \): 109.5°
- The order of bond angles is:
\[ \text{Bond Angle: } sp > sp^2 > sp^3 \]
- Again, the question provides \( sp < sp^2 < sp^3 \), making this option incorrect.

3. **Size**:
- The size of the hybrid orbitals is inversely related to the s-character. More s-character leads to a more compact and smaller size.
- Thus, the order of size is:
\[ \text{Size: } sp < sp^2 < sp^3 \]
- This matches the order given in the question, so this option is correct.

4. **Energy Level**:
- The energy level of hybrid orbitals increases with the increase in p-character. Since s orbitals are lower in energy than p orbitals:
- The order of energy levels is:
\[ \text{Energy Level: } sp < sp^2 < sp^3 \]
- This also matches the order given in the question, making this option correct.

### Conclusion:
From the analysis:
- The correct characteristics for the order \( sp < sp^2 < sp^3 \) are:
- Size: Correct
- Energy Level: Correct
- Electronegativity: Incorrect
- Bond Angle: Incorrect

Thus, the correct codes for the characteristics are **(iii) Size and (iv) Energy Level**.