Which of the following is not the characteristic of a white phosphorus (`P_4`) molecule?

Options

A. Presence of six P-P single bonds
B. Presence of four P-P single bonds
C. Presence of four lone pairs of electrons
D. Presence of PPP angle of `60^@`

Explanation

To determine which of the following is not a characteristic of a white phosphorus (P₄) molecule, we will analyze the structure and bonding of P₄.

### Step 1: Understand the Structure of P₄
White phosphorus consists of four phosphorus atoms arranged in a tetrahedral shape. Each phosphorus atom is bonded to three other phosphorus atoms.

**Hint:** Remember that the arrangement of atoms in a molecule can help determine the types and numbers of bonds present.

### Step 2: Identify the Types of Bonds
In the P₄ molecule, each phosphorus atom forms single covalent bonds with three neighboring phosphorus atoms. This results in a total of 6 P-P single bonds in the entire molecule.

**Hint:** Count the number of bonds formed between the atoms to verify the total number of bonds.

### Step 3: Determine the Lone Pairs
Each phosphorus atom has five valence electrons. In P₄, three of these electrons are used to form bonds with other phosphorus atoms, leaving one lone pair of electrons on each phosphorus atom. Since there are four phosphorus atoms, there are a total of 4 lone pairs of electrons in the molecule.

**Hint:** Consider how many valence electrons are available and how they are distributed among bonds and lone pairs.

### Step 4: Analyze the Bond Angles
The bond angle between the P-P-P bonds in white phosphorus is approximately 60 degrees. This is a characteristic feature of the tetrahedral arrangement of the phosphorus atoms.

**Hint:** Visualize the molecular geometry to understand the angles formed between the bonds.

### Step 5: Evaluate the Options
Now, let's evaluate the provided options:
1. Presence of 6 P-P single bonds - **Correct**
2. Presence of 4 P-P single bonds - **Not Correct**
3. Presence of 4 lone pairs of electrons - **Correct**
4. Presence of P-P-P angle of 60 degrees - **Correct**

From this evaluation, the statement that is not a characteristic of white phosphorus is the second option: "Presence of 4 P-P single bonds."

### Final Answer:
The characteristic that is not true for white phosphorus (P₄) is the presence of 4 P-P single bonds.

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