Pauling's electronegativity values for elements are useful in predicting

Options

A. (a) polarity of the molecules
B. (b) position in the emf series
C. (c) coordination numbers
D. (d) dipole moments

Explanation

To solve the question regarding Pauling's electronegativity values for elements and their usefulness in predicting certain properties, we can follow these steps:

### Step-by-Step Solution

1. **Understanding Electronegativity**:
- Electronegativity is a measure of the tendency of an atom to attract a bonding pair of electrons. Pauling's scale is one of the most commonly used scales for measuring electronegativity.

2. **Identifying the Options**:
- The options provided are:
- A) Polarity of the molecules
- B) Position in the EMF series
- C) Coordination numbers
- D) Dipole moments

3. **Analyzing Each Option**:
- **Option A (Polarity of the molecules)**:
- Electronegativity values can help determine the polarity of a bond. If two atoms in a molecule have different electronegativities, the bond between them will likely be polar.
- **Option B (Position in the EMF series)**:
- The EMF series relates to electrochemical series and does not directly correlate with electronegativity.
- **Option C (Coordination numbers)**:
- Coordination numbers are related to the number of bonds formed by a central atom in coordination chemistry and are not directly predicted by electronegativity.
- **Option D (Dipole moments)**:
- While dipole moments are influenced by polarity, they are not directly predicted by electronegativity values alone.

4. **Conclusion**:
- Since Pauling's electronegativity values are primarily used to determine the polarity of bonds, the best answer is **Option A: Polarity of the molecules**.

### Final Answer:
**Option A: Polarity of the molecules.**

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