NaH is an example of :

Options

A. electron –rich hydride
B. metallic hydride
C. saline hydride
D. molecular hydride

Explanation

To determine what NaH (sodium hydride) is an example of, we can analyze its properties and classification based on its composition and formation.

### Step-by-Step Solution:

1. **Identify the Compound**:
- NaH is sodium hydride, which consists of sodium (Na) and hydrogen (H).

2. **Understand the Nature of Sodium**:
- Sodium is an alkali metal, which is part of Group 1 in the periodic table. Alkali metals are known for their tendency to lose one electron and form cations.

3. **Examine the Bonding**:
- In sodium hydride, sodium donates an electron to hydrogen. This results in the formation of Na⁺ (sodium ion) and H⁻ (hydride ion). The bond formed between these ions is ionic in nature.

4. **Classify the Type of Hydride**:
- Hydrides can be classified into different categories such as ionic hydrides, covalent hydrides, and metallic hydrides.
- Ionic hydrides are formed by metals that have a lower electronegativity than hydrogen, which is the case for sodium.

5. **Conclusion**:
- Since sodium is an alkali metal and forms an ionic bond with hydrogen, NaH is classified as a **saline hydride** (also known as ionic hydride).

### Final Answer:
NaH is an example of a **saline hydride**.

---