In the first biological applicativon of bucky ball , chemists at the University of Califorminaat San `F` Francisoc and Santa Barbra made a discovery in ` 1993` that could help I designing drugs to rtreat `AIDS`. The human immunodeficienrcy virus (HIV) that causes AIES reproduces by syntheising a long protein chain , which is cut into smaller segments by an enzymecalled HiV-proteases . ONe way to stop `AIDS`, then might be to inacivate the enzyme. when the chemists reacted a water-soluble derivative of bucky ball with HIV-protease , they found that itbinds to the portion of th enzyme that would ordinarily clareve the repreouctive protein , preventing the ` HIV` virus from reproducing . Consequently the virus could no bnolgre infect the human cells they had frown in the laboratory . The buycky ball compound itself is not a suitable drug for use against AIDS because of potential side effects and delivery difficaultes , but it does provide a model for the development of such drugs
In bucky bucky ball each atom is :

Options

A. `sp^2`-hybridised element with extensive delocalised molecular orbital
B. `sp^2 `-hybridised element with localised molecular orbital .
C. `sp^3-`hybridised element with delocalised molecular orbital .
D. `sp^3-`hybridsed element with localised molecular orbital .

Answer

To solve the question regarding the structure of the buckyball (C60) and the nature of its atoms, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Identify the Allotrope**:
- Buckyball is an allotrope of carbon. Allotropes are different forms of the same element in the same physical state. In this case, we are discussing carbon.

**Hint**: Remember that allotropes can have different structures and properties despite being made of the same element.

2. **Recognize the Formula**:
- The chemical formula for buckyball is C60, which indicates that it consists of 60 carbon atoms.

**Hint**: Chemical formulas give you the number of atoms of each element in a molecule.

3. **Understand the Structure**:
- The structure of C60 resembles a soccer ball, consisting of 12 pentagonal (5-membered) rings and 20 hexagonal (6-membered) rings.

**Hint**: Visualizing the structure can help you understand how the atoms are arranged.

4. **Determine Hybridization**:
- Each carbon atom in the buckyball is sp² hybridized. This means each carbon atom forms three sigma bonds with other carbon atoms.

**Hint**: Hybridization helps explain the bonding and geometry of molecules.

5. **Delocalization of Electrons**:
- In the C60 structure, the electrons are delocalized, which contributes to its stability and gives it aromatic character.

**Hint**: Delocalization refers to the spreading out of electrons over several atoms, which can enhance stability.

6. **Conclusion**:
- Therefore, in a buckyball, each carbon atom is sp² hybridized with extensive delocalization of electrons.

**Hint**: Summarizing the key points can help reinforce your understanding of the topic.

### Final Answer:
In a buckyball, each atom is sp² hybridized with extensive delocalization of electrons.