In diborane, banana bond is formed between

Options

A. 2 electrons, 3 atoms
B. 2 electrons, 1 atom
C. 2 electrons, 2 atoms
D. 1 electron, 2 atoms.

Explanation

To answer the question, "In diborane, banana bond is formed between," we will follow these steps:

### Step 1: Understand the Structure of Diborane
Diborane has the chemical formula B2H6. It consists of two boron atoms and six hydrogen atoms.

**Hint:** Remember that diborane is a compound formed from boron and hydrogen, and its structure is crucial for understanding the bonding.

### Step 2: Identify the Hybridization of Boron
In diborane, each boron atom undergoes sp³ hybridization. This means that one s orbital and three p orbitals from each boron atom combine to form four equivalent sp³ hybrid orbitals.

**Hint:** Hybridization helps explain the geometry and bonding in molecules. Look for the types of orbitals involved.

### Step 3: Analyze the Bonding in Diborane
In diborane, each boron atom forms four bonds: two with hydrogen atoms (forming σ bonds) and two with other boron atoms through what are known as banana bonds.

**Hint:** Consider how many bonds each atom forms and the nature of those bonds.

### Step 4: Define the Banana Bond
The banana bond (or B-H-B bond) is a special type of bond that involves three atoms: two boron atoms and one hydrogen atom. It is formed by the overlap of the sp³ hybrid orbital of one boron atom, the 1s orbital of a hydrogen atom, and the vacant sp³ hybrid orbital of the other boron atom.

**Hint:** Focus on the concept of bonding involving three centers and how electrons are shared among them.

### Step 5: Conclude the Formation of Banana Bonds
In summary, the banana bond in diborane is formed between:
- The vacant sp³ hybrid orbital of one boron atom
- The sp³ hybrid orbital of the other boron atom
- The 1s orbital of a hydrogen atom

This bond is often referred to as a three-centered two-electron bond because it involves two electrons shared among three atoms.

**Hint:** Remember the terminology: "three-centered two-electron bond" indicates the involvement of three atoms sharing two electrons.

### Final Answer
In diborane, the banana bond is formed between two boron atoms and one hydrogen atom, involving the overlap of their respective orbitals.