Elements which occupied position in the lother meyer curve, on the peaks, were

Options

A. Alkali metals
B. Highly electro positive elements
C. Elements having large atomic volume
D. All

Answer

To answer the question about which elements occupy the peaks in the Lothar-Meyer curve, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Lothar-Meyer Curve**:
- The Lothar-Meyer curve is a graphical representation that plots atomic volume (on the y-axis) against atomic mass (on the x-axis).

2. **Identifying the Peaks**:
- In this curve, the peaks represent elements with the largest atomic volumes. These peaks correspond to elements that are highly electropositive.

3. **Recognizing the Elements at the Peaks**:
- The elements that occupy these peak positions are primarily the alkali metals. Alkali metals are known for their high electropositivity and large atomic volumes.

4. **Listing the Alkali Metals**:
- The alkali metals include:
- Lithium (Li)
- Sodium (Na)
- Potassium (K)
- Rubidium (Rb)
- Cesium (Cs)
- Francium (Fr)

5. **Conclusion**:
- Therefore, the elements that occupy the peaks in the Lothar-Meyer curve are the alkali metals, which are characterized by being highly electropositive and having large atomic volumes.

### Final Answer:
The elements which occupied positions in the Lothar-Meyer curve on the peaks were the alkali metals, which are highly electropositive elements with large atomic volumes.

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