On moving down the group, acidic nature of oxides of group 14.

Options

A. Decreases
B. Increases
C. Remains same
D. Increases then decreases

Answer

To determine how the acidic nature of oxides of group 14 changes as we move down the group, we can analyze the properties of the elements and their oxides step by step.

### Step-by-Step Solution:

1. **Identify the Group 14 Elements**:
The elements in group 14 of the periodic table are Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), and Lead (Pb).

**Hint**: Remember the order of elements in group 14 as you analyze their properties.

2. **Understand Acidic Nature**:
Acidic nature refers to the ability of a substance to donate protons (H⁺ ions) or accept electron pairs. In the context of oxides, it relates to how well the oxide can react with water to form acids or how well it can react with bases.

**Hint**: Consider how oxides interact with water and bases to determine their acidic nature.

3. **Consider Atomic Size and Electronegativity**:
As you move down the group from Carbon to Lead, the atomic size increases due to the addition of electron shells. This increase in size leads to a decrease in electronegativity.

**Hint**: Recall that electronegativity is the ability of an atom to attract electrons; larger atoms have lower electronegativity.

4. **Relate Electronegativity to Acidic Nature**:
Since acidic nature is related to the ability to attract electron pairs, a decrease in electronegativity means that the oxides will have a reduced tendency to accept electron pairs. Therefore, the acidic nature of the oxides will decrease.

**Hint**: Think about how the ability to attract electrons affects the behavior of oxides in chemical reactions.

5. **Conclusion**:
Based on the above analysis, we can conclude that as we move down the group from Carbon to Lead, the acidic nature of the oxides decreases.

**Final Answer**: The acidic nature of oxides of group 14 decreases as we move down the group.