State true or false
The tendency of atom to attract shared pair of electrons is known as electron affinity.

Explanation

To determine whether the statement "The tendency of an atom to attract shared pair of electrons is known as electron affinity" is true or false, we can break it down step by step.

### Step 1: Understand the Definitions
- **Electron Affinity**: This is defined as the amount of energy released when an electron is added to a neutral atom in the gaseous state to form a negative ion. It measures how much an atom "wants" to gain an electron.

- **Electronegativity**: This refers to the tendency of an atom to attract shared pairs of electrons when it is bonded to another atom. It is a measure of the ability of an atom in a chemical compound to attract electrons.

### Step 2: Analyze the Statement
The statement claims that the tendency of an atom to attract shared pairs of electrons is known as electron affinity.

### Step 3: Compare Definitions
- The statement describes a property that is related to **electronegativity**, not electron affinity. Electron affinity is about gaining an electron, while electronegativity is about attracting shared electrons in a bond.

### Step 4: Conclusion
Since the definition provided in the statement does not match the definition of electron affinity, we conclude that the statement is **False**.

### Final Answer
**False**

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