Incorrect among the following

Options

A. `H^(+)` exist in water as `H^(+)(H_(2)O)_(n)`
B. `H^(-)` exist in water as `H^(-)(H_(2)O)_(n)`
C. `Delta_(hyd)H_((H^(+)))^(Theta)=Delta_(hyd)H_((H^(-)))^(Theta)`(hyd`-=`hydration)
D. H exist in water as `H.(H_(2)O)_(n)`

Answer

To determine the incorrect statement among the given options, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Option 1: H⁺ and water molecules**
- H⁺ (proton) can indeed coordinate with water molecules. In aqueous solutions, protons associate with water to form hydronium ions (H₃O⁺). This option is correct.

2. **Option 2: H⁻ and water molecules**
- H⁻ (hydride ion) is a negatively charged species and can also associate with water molecules. It can form hydride complexes with water. This option is also correct.

3. **Option 3: Heat of hydration for H⁺ and H⁻**
- The heat of hydration refers to the energy released when ions are surrounded by water molecules. For both H⁺ and H⁻, the extent of hydration is influenced by their charge. Since both have the same magnitude of charge (1), the heat of hydration for both should be comparable. This option is correct as well.

4. **Option 4: H and water molecules**
- H (hydrogen atom) does not carry any charge. Unlike H⁺ and H⁻, a neutral hydrogen atom does not have the ability to coordinate with water molecules in the same way. Therefore, this option is incorrect.

### Conclusion:
The incorrect option among the given statements is **Option 4: H and water molecules**.

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