What Is Americium?

Americium, the ninety-fifth element on the periodic table, is a synthetic, radioactive actinide with a surprising presence in everyday life.

Atomic Number: 95

Symbol: Am

Atomic Mass: [243] u (most stable isotope)

Category: Actinide

State at Room Temperature: Solid

Discovered By: Glenn T. Seaborg, Ralph A. James, et al. (1944)

⚛️ Atomic Structure of Americium

Americium has ninety-five protons, one hundred forty-eight neutrons (in its most stable isotope, Americium-243), and ninety-five electrons, with two in its outer shell.

  • 🟢 Protons: 95
  • 🔴 Neutrons: 148 (Most stable isotope, Americium-243)
  • 🟡 Electrons: 95

💡 Did you know? Americium is used in smoke detectors in your home!

🔬 Americium Properties

Americium is radioactive, silvery-white, and dense. It has a melting point of 1176°C (2149°F) and emits alpha particles and gamma rays.

🧪 How Was Americium Discovered?

In 1944, American scientists Glenn T. Seaborg, Ralph A. James, and others synthesized Americium during the Manhattan Project.

⚡ Uses of Americium

  • 🚨 Safety: Ionizing source in smoke detectors.
  • 🔬 Research: Studying nuclear chemistry.
  • ⚡ Gauges: Measuring thickness in manufacturing.

💡 Fun Facts About Americium

  • 🇺🇸 Named after America.
  • ⏳ Half-life of 432.2 years.
  • 🏠 Found in smoke detectors.
  • 🌟 Glows faintly green.

⚠️ Safety & Precautions

Americium is radioactive and a radiation risk. It's safe in small amounts in detectors but requires careful handling in larger quantities.

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