⚛️ Atomic Structure of Selenium
Selenium has thirty-four protons, forty-five neutrons (in its most common isotope, Selenium-80), and thirty-four electrons, with six in its outer shell.
- 🟢 Protons: 34
- 🔴 Neutrons: 45 (Most common isotope, Selenium-80)
- 🟡 Electrons: 34
💡 Did you know? Selenium-75, a radioactive isotope, is used in medical imaging for pancreas scans!
🔬 Selenium Properties
Selenium is brittle, semiconducting, and exists in multiple forms (allotropes). It melts at 221°C (430°F) and conducts electricity better in light than in darkness.
🧪 How Was Selenium Discovered?
In 1817, Swedish chemists Jöns Jacob Berzelius and Johan Gottlieb Gahn discovered Selenium in sulfuric acid residues, naming it after the Greek word for "moon" (selene).
⚡ Uses of Selenium
- 💻 Electronics: Photocopiers and solar cells.
- 💊 Nutrition: Trace element in supplements and food.
- 🏭 Industry: Glassmaking to remove color.
- 🔬 Research: Studying its antioxidant properties.
💡 Fun Facts About Selenium
- 🧬 Vital for human health, found in Brazil nuts.
- 🌙 Named after the moon, contrasting with tellurium (Earth).
- 📸 Key to early photography and xerography.
- 🌋 Emitted from volcanoes in trace amounts.
⚠️ Safety & Precautions
Selenium is toxic in large doses, causing nausea and hair loss, but safe in trace amounts as a nutrient. Avoid inhalation of dust or fumes.