What is Scandium?

Scandium, the twenty-first element on the periodic table, is a rare, silvery transition metal. It's lightweight and strong, making it valuable in specialized applications.

Atomic Number: 21

Symbol: Sc

Atomic Mass: 44.956 u

Category: Transition Metal

State at Room Temperature: Solid

Discovered By: Lars Fredrik Nilson (1879)

⚛️ Atomic Structure of Scandium

Scandium has twenty-one protons, twenty-four neutrons (in its only stable isotope, Scandium-45), and twenty-one electrons, with three in its outer shell.

  • 🟢 Protons: 21
  • 🔴 Neutrons: 24 (Stable isotope, Scandium-45)
  • 🟡 Electrons: 21

💡 Did you know? Scandium-46, a radioactive isotope, is used in oil refining and tracing studies!

🔬 Scandium Properties

Scandium is soft, lightweight, and resists corrosion when alloyed. It has a high melting point (1541°C / 2806°F) and reacts slowly with oxygen.

🧪 How Was Scandium Discovered?

In 1879, Swedish chemist Lars Fredrik Nilson discovered Scandium in the minerals euxenite and gadolinite, confirming Dmitri Mendeleev's prediction of "ekaboron."

⚡ Uses of Scandium

  • ✈️ Aerospace: Strengthens aluminum alloys for aircraft.
  • 💡 Lighting: Scandium iodide in high-intensity lamps.
  • 🏋️ Sports: Lightweight, durable equipment (e.g., bike frames).
  • 🔬 Research: Studied for solid oxide fuel cells.

💡 Fun Facts About Scandium

  • 🌍 One of the rarest elements in Earth's crust.
  • ⭐ Abundant in stars, detected via spectroscopy.
  • 💰 Expensive due to its scarcity and extraction difficulty.
  • 🔥 Burns with a yellowish flame when ignited.

⚠️ Safety & Precautions

Scandium is non-toxic in solid form but flammable as dust or thin strips. Handle with care to avoid inhalation or ignition risks.

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