Among the transition elements the element with lowest melting point belongs to

Options

A. Group 3
B. group 11
C. group 6
D. group 12

Explanation

To determine which group among the transition elements contains the element with the lowest melting point, we can analyze the properties of the elements in different groups of the d-block.

### Step-by-Step Solution:

1. **Identify the Groups of Transition Elements:**
Transition elements are found in groups 3 to 12 of the periodic table. We will analyze the melting points of elements in these groups.

2. **Analyze Group 3 Elements:**
- Group 3 elements have the electronic configuration of \( n-1 d^1 \) and \( s^2 \).
- They typically exhibit higher melting points due to strong metal-metal bonding and high intermolecular forces.

3. **Analyze Group 11 Elements:**
- Group 11 consists of coinage metals: copper (Cu), silver (Ag), and gold (Au).
- These metals are known for their high ductility and malleability, which correlates with higher melting points.

4. **Analyze Group 6 Elements:**
- Group 6 elements are less electropositive compared to groups 3 and 11.
- They have higher electronegativity, which can lead to lower melting points compared to groups 3 and 11, but still have decent melting points.

5. **Analyze Group 12 Elements:**
- Group 12 includes elements like zinc (Zn), cadmium (Cd), and mercury (Hg).
- Their electronic configuration is \( n-1 d^{10} s^2 \), indicating fully filled d and s orbitals.
- This configuration results in weak metal-metal bonding and low intermolecular forces, leading to significantly lower melting points.

6. **Conclusion:**
- Among the transition elements, group 12 has the element with the lowest melting point, specifically mercury (Hg), which is a liquid at room temperature.

### Final Answer:
The element with the lowest melting point among the transition elements belongs to **Group 12**.

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