The energy liberated during the removal of one electron from an atom is called its ionisation potential.(T/F)

Answer

To determine whether the statement "The energy liberated during the removal of one electron from an atom is called its ionisation potential" is true or false, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition of Ionization Potential**:
- Ionization potential (or ionization energy) is defined as the amount of energy required to remove an electron from an isolated gaseous atom.

2. **Analyze the Statement**:
- The statement claims that energy is liberated during the removal of an electron. However, according to the definition, energy is actually required to remove the electron.

3. **Identify the Key Terms**:
- "Liberated" implies that energy is released, while "required" indicates that energy must be supplied to perform the action of removing an electron.

4. **Conclusion**:
- Since the definition of ionization potential specifies that energy is required (not liberated), the statement is false.

### Final Answer:
The statement is **False**. The energy required to remove an electron from an atom is called its ionization potential, not the energy that is liberated.

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