Which compound has electrovalent covalent , co - ordinate as well as hydrogen bond ?

Options

A. `CuSO_(4). 5H_2O`
B. `ZnCO_(4) . 7H_2O`
C. `FeSO_(4).7H_2O`
D. `FeCl_(3).6H_2O`

Answer

To determine which compound has electrovalent, covalent, coordinate, and hydrogen bonds, we will analyze the properties of the compound CuSO4·5H2O (copper(II) sulfate pentahydrate).

### Step-by-Step Solution:

1. **Understanding Bond Types**:
- **Electrovalent Bond**: Formed by the transfer of electrons from one atom to another, resulting in oppositely charged ions that attract each other.
- **Covalent Bond**: Formed by the sharing of electrons between atoms.
- **Coordinate Bond**: A type of covalent bond where one atom provides both electrons for the bond.
- **Hydrogen Bond**: A weak bond that occurs when a hydrogen atom covalently bonded to an electronegative atom is attracted to another electronegative atom.

2. **Analyzing CuSO4·5H2O**:
- **Electrovalent Bond**: In CuSO4, copper (Cu) has a +2 oxidation state and sulfate (SO4) has a -2 charge. The electrovalent bond is formed between Cu²⁺ and SO4²⁻ ions.
- **Covalent Bond**: Within the sulfate ion (SO4²⁻), the bonds between sulfur (S) and oxygen (O) are covalent bonds, formed by sharing electrons.
- **Coordinate Bond**: The water molecules (H2O) coordinate with the Cu²⁺ ion. Each water molecule donates a lone pair of electrons to the Cu²⁺ ion, forming coordinate bonds.
- **Hydrogen Bond**: Hydrogen bonds can form between the hydrogen atoms of the water molecules and the oxygen atoms of the sulfate ion or other water molecules.

3. **Conclusion**:
- CuSO4·5H2O contains all four types of bonds: electrovalent (between Cu²⁺ and SO4²⁻), covalent (within SO4²⁻), coordinate (between Cu²⁺ and H2O), and hydrogen bonds (between H2O molecules and SO4²⁻ or other H2O molecules).

### Final Answer:
The compound that has electrovalent, covalent, coordinate, and hydrogen bonds is **CuSO4·5H2O** (copper(II) sulfate pentahydrate).

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