In which of following ionic , covalent and co-ordinate bonds are present ?

Options

A. Water
B. Ammonia
C. Sodium cyanide
D. Potassium bromide

Answer

To determine which of the following compounds contain ionic, covalent, and coordinate bonds, we will analyze each option step by step.

### Step 1: Analyze Water (H₂O)
- Water is composed of two hydrogen atoms and one oxygen atom.
- The bonds between hydrogen and oxygen are formed by the sharing of electrons, which classifies them as **covalent bonds**.
- However, when water ionizes, it can produce H⁺ and OH⁻ ions, indicating that there are also **ionic characteristics** present when considering its dissociation in water.

**Conclusion for Water**: Contains covalent bonds and exhibits ionic characteristics when ionized.

### Step 2: Analyze Ammonia (NH₃)
- Ammonia consists of one nitrogen atom and three hydrogen atoms.
- The bonds in ammonia are formed by the sharing of electrons between nitrogen and hydrogen atoms, which makes them **covalent bonds**.

**Conclusion for Ammonia**: Contains only covalent bonds.

### Step 3: Analyze Sodium Cyanide (NaCN)
- Sodium cyanide is composed of sodium (Na) and the cyanide ion (CN⁻).
- Sodium donates an electron to form Na⁺, and the cyanide ion is formed from carbon and nitrogen atoms, which share electrons to form a triple bond (C≡N).
- This indicates that sodium cyanide has both **ionic bonds** (between Na⁺ and CN⁻) and **covalent bonds** (within the CN⁻ ion).

**Conclusion for Sodium Cyanide**: Contains both ionic and covalent bonds.

### Step 4: Analyze Potassium Bromide (KBr)
- Potassium bromide consists of potassium (K) and bromine (Br).
- Potassium donates an electron to bromine, resulting in the formation of K⁺ and Br⁻ ions, which indicates the presence of an **ionic bond**.

**Conclusion for Potassium Bromide**: Contains only ionic bonds.

### Final Summary
- **Water (H₂O)**: Contains covalent bonds and exhibits ionic characteristics.
- **Ammonia (NH₃)**: Contains only covalent bonds.
- **Sodium Cyanide (NaCN)**: Contains both ionic and covalent bonds.
- **Potassium Bromide (KBr)**: Contains only ionic bonds.

### Overall Answer
- **Ionic Bonds**: Present in Sodium Cyanide (NaCN) and Potassium Bromide (KBr).
- **Covalent Bonds**: Present in Water (H₂O), Ammonia (NH₃), and Sodium Cyanide (NaCN).
- **Coordinate Bonds**: Not explicitly present in any of the options provided.