What is oxygen gas formula?
The Correct Answer and Explanation is :
The chemical formula for oxygen gas is O₂.
Explanation:
Oxygen gas (O₂) is a diatomic molecule, meaning it consists of two oxygen atoms chemically bonded together. Oxygen belongs to Group 16 (also known as the chalcogens) of the periodic table and has an atomic number of 8. Each oxygen atom has 6 electrons in its outer shell and needs 2 more electrons to achieve a stable configuration (similar to noble gases). To satisfy this requirement, two oxygen atoms share a pair of electrons, forming a covalent double bond, represented by O=O in structural formulas.
Role in Nature:
Oxygen is essential for life on Earth. It is a key component of the atmosphere, making up about 21% of its volume. O₂ plays a critical role in cellular respiration, a process in which organisms, including humans, use oxygen to break down glucose and produce energy in the form of ATP. This energy is crucial for all biological processes.
Plants and some microorganisms produce oxygen during photosynthesis, where they convert carbon dioxide (CO₂) and water (H₂O) into glucose (C₆H₁₂O₆) and oxygen (O₂) using sunlight. This process is vital for maintaining atmospheric oxygen levels.
Properties:
Oxygen gas is colorless, odorless, and tasteless under normal conditions. It is slightly soluble in water, which enables aquatic life to survive as oxygen is dissolved in water bodies. Oxygen is highly reactive and can form compounds with most other elements, making it essential in oxidation reactions, including combustion and rusting.
In healthcare, oxygen gas is used in therapies to support patients with respiratory conditions, providing supplemental oxygen for those with difficulty breathing.