Which are correct match?
(i) Eka silicon-Be (ii) Eka aluminium -Ga
(iii) Eka mangenese-Tc (iv) Eka scandium-B

Options

A. a, b, c
B. a, b
C. a, c
D. b, c

Answer

To solve the question regarding the correct matches of the "eka" elements, we need to identify the correct corresponding elements for each "eka" term. Let's analyze each option step by step.

### Step 1: Understanding "Eka" Elements
The term "eka" is used in the periodic table to denote elements that are one place down from a known element in the same group. For example, "eka-silicon" refers to the element that is below silicon in the periodic table.

### Step 2: Analyzing Each Option
1. **Eka Silicon - Be**:
- **Correct Element**: The element below silicon (Si) is germanium (Ge), not beryllium (Be).
- **Conclusion**: This match is **incorrect**.

2. **Eka Aluminium - Ga**:
- **Correct Element**: The element below aluminum (Al) is gallium (Ga).
- **Conclusion**: This match is **correct**.

3. **Eka Manganese - Tc**:
- **Correct Element**: The element below manganese (Mn) is technetium (Tc).
- **Conclusion**: This match is **correct**.

4. **Eka Scandium - B**:
- **Correct Element**: The element below scandium (Sc) is titanium (Ti), not boron (B).
- **Conclusion**: This match is **incorrect**.

### Step 3: Summary of Matches
- **Eka Silicon - Be**: Incorrect
- **Eka Aluminium - Ga**: Correct
- **Eka Manganese - Tc**: Correct
- **Eka Scandium - B**: Incorrect

### Final Answer
The correct matches are **(ii) Eka Aluminium - Ga** and **(iii) Eka Manganese - Tc**.