⚛️ Atomic Structure of Oxygen
Oxygen has eight protons, eight neutrons (in its most common isotope, Oxygen-16), and eight electrons, with six in its outer shell, forming O₂ molecules.
- 🟢 Protons: 8
- 🔴 Neutrons: 8 (Most common isotope, Oxygen-16)
- 🟡 Electrons: 8
💡 Did you know? Oxygen-18, with two extra neutrons, helps scientists study climate history in ice cores!
🔬 Oxygen Properties
Oxygen is highly reactive, combining with most elements to form oxides. It's colorless and odorless as O₂, making up 21% of Earth's atmosphere.
🧪 How Was Oxygen Discovered?
In the 1770s, Swedish chemist Carl Wilhelm Scheele and English chemist Joseph Priestley independently discovered Oxygen by heating compounds like mercuric oxide.
⚡ Uses of Oxygen
- 🩺 Medicine: Supports breathing in hospitals and diving.
- 🔥 Combustion: Fuels fires and rockets (e.g., with hydrogen).
- 🏭 Industry: Used in steelmaking and chemical production.
- 🌿 Life: Essential for cellular respiration in humans and animals.
💡 Fun Facts About Oxygen
- 🌍 Makes up 46% of Earth's crust by mass (in compounds).
- 🌊 Most of Earth's oxygen is in water (H₂O).
- ☀️ Produced by photosynthesis in plants and algae.
- 🌀 Ozone (O₃) shields Earth from UV radiation.
⚠️ Safety & Precautions
Oxygen is non-toxic but supports combustion, so it must be kept away from open flames or sparks to prevent fires.