Transition elements get hydrolysed because they have

Options

A. vacant orbitals
B. high atomic weights
C. unpaired electrons
D. fully filled orbitals

Answer

To solve the question "Transition elements get hydrolyzed because they have," we will analyze the options provided and determine the correct answer through logical reasoning.

### Step-by-Step Solution:

1. **Understanding Hydrolysis in Transition Elements:**
- Hydrolysis refers to the reaction of a substance with water, leading to the formation of hydroxides or other products. Transition elements often undergo hydrolysis when they form complexes with water.

2. **Analyzing the Options:**
- The options provided are:
A. Vacant orbital
B. High atomic weight
C. Unpaired electron
D. Fully filled orbital

3. **Evaluating Each Option:**
- **Option A: Vacant orbital**
- Transition metals have d-orbitals that can be vacant. This allows them to accept electron pairs from water molecules, facilitating hydrolysis. This is a strong reason for hydrolysis.
- **Option B: High atomic weight**
- While some transition metals have high atomic weights, this does not directly influence their ability to undergo hydrolysis.
- **Option C: Unpaired electron**
- The presence of unpaired electrons affects magnetic properties and reactivity but does not directly account for hydrolysis.
- **Option D: Fully filled orbital**
- Transition metals with fully filled d-orbitals are less likely to undergo hydrolysis, as they do not have the capacity to accept additional electrons from water.

4. **Conclusion:**
- The correct answer is **Option A: Vacant orbital**. Transition elements get hydrolyzed primarily due to the presence of vacant d-orbitals that can participate in bonding with water molecules.

### Final Answer:
Transition elements get hydrolyzed because they have **vacant orbital**.

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