Which of the following is the wrong statement? (1) O3 molecule is bent (2) Ozone is violet-black in solid state (3) Ozone is diamagnetic gas (4) ONCl a

To determine which statement about ozone (O3) is incorrect, let's analyze each option carefully.

Examining Each Statement

1. O3 molecule is bent

This statement is true. The ozone molecule has a bent shape due to the presence of a lone pair of electrons on the central oxygen atom. This lone pair repels the bonding pairs, resulting in a V-shaped or bent molecular geometry.

2. Ozone is violet-black in solid state

This statement is also accurate. When ozone is in its solid form, it appears as a violet-black crystalline substance. This characteristic color is due to its unique electronic structure and the way it absorbs light.

3. Ozone is a diamagnetic gas

This statement is incorrect. Ozone is actually paramagnetic, not diamagnetic. This means that it has unpaired electrons, which allows it to be attracted to magnetic fields. In contrast, diamagnetic substances have all their electrons paired and are not attracted to magnetic fields.

4. ONCl

This statement seems incomplete, but if we consider it as a reference to the compound formed by oxygen, nitrogen, and chlorine, it does not directly relate to the properties of ozone. However, it does not provide a clear assertion that can be evaluated as true or false.

Identifying the Incorrect Statement

From our analysis, the third statement, "Ozone is a diamagnetic gas," is the incorrect one. Ozone's paramagnetic nature is a significant aspect of its chemical behavior and interactions.

Understanding the Implications

Recognizing the properties of ozone is crucial, especially in environmental science, as it plays a vital role in the Earth's atmosphere, particularly in the ozone layer, which protects us from harmful ultraviolet radiation. Its unique properties, such as being a strong oxidizing agent and its distinct color in solid form, are essential for various applications, including disinfection and air purification.