An element 'X' is forming an acidic oxide. Its position in modern periodic table will be

Options

A. Group 1 and Period 3
B. Group 2 and Period 3
C. Group 13 and Period 3
D. Group 16 and Period 3

Answer

To determine the position of element 'X' that forms an acidic oxide in the modern periodic table, we can follow these steps:

### Step-by-step Solution:

1. **Understanding Acidic Oxides**: Acidic oxides are typically formed by non-metals. These oxides react with water to form acids or react with bases to form salts.

2. **Identifying Groups**: In the periodic table, elements are arranged in groups (columns) and periods (rows). Non-metals that form acidic oxides are generally found in groups 14, 15, and 16.

3. **Analyzing Group 1 and Group 2**:
- Group 1 elements (alkali metals) and Group 2 elements (alkaline earth metals) form basic oxides, not acidic oxides. Therefore, element 'X' cannot be in these groups.

4. **Considering Group 13**:
- Group 13 contains elements like boron, which can form acidic oxides. However, boron is in period 2, not period 3. Thus, this option is also incorrect.

5. **Examining Group 14 and Group 15**:
- Group 14 elements (like carbon) can form acidic oxides, but they are not the most common.
- Group 15 elements (like nitrogen) can also form acidic oxides, but they are not in period 3.

6. **Focusing on Group 16**:
- Group 16 elements (such as oxygen and sulfur) are known for forming acidic oxides. For instance, sulfur forms sulfur dioxide (SO₂) and sulfur trioxide (SO₃), both of which are acidic oxides.

7. **Final Conclusion**:
- Since we are looking for an element that forms an acidic oxide and is in period 3, the most suitable candidate is sulfur, which is located in Group 16, Period 3.

### Final Answer:
Element 'X' is located in **Group 16, Period 3** of the modern periodic table.

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