`BeH_(2)` contains three centre two electron bond. True or False

Answer

To determine whether the statement "BeH₂ contains three center two electron bonds" is true or false, we can analyze the structure and bonding of beryllium hydride (BeH₂) step by step.

### Step-by-Step Solution:

1. **Understanding the Composition of BeH₂**:
- Beryllium hydride consists of beryllium (Be) and hydrogen (H) atoms. Beryllium has 2 valence electrons, and each hydrogen atom has 1 valence electron.

2. **Valence Electrons in BeH₂**:
- In total, BeH₂ has 4 valence electrons (2 from Be and 2 from the two H atoms).

3. **Formation of Bonds**:
- Beryllium forms two covalent bonds with two hydrogen atoms. However, beryllium is electron-deficient because it has only 4 electrons to share among three atoms (two H and one Be).

4. **Three Center Two Electron Bonds**:
- A three center two electron bond (3c-2e bond) involves three atoms sharing two electrons. In the case of BeH₂, the bonding can be described as beryllium forming bonds with hydrogen atoms in a way that allows for the sharing of electrons.

5. **Polymeric Structure**:
- BeH₂ has a polymeric structure where the beryllium atoms are bonded to hydrogen atoms in such a way that they form multiple three center two electron bonds. Each bond involves the sharing of two electrons among three atoms.

6. **Conclusion**:
- Since BeH₂ does indeed contain three center two electron bonds, the statement "BeH₂ contains three center two electron bonds" is **True**.

### Final Answer:
**True**