What is Einsteinium?

Einsteinium, the ninety-ninth element on the periodic table, is a synthetic, radioactive actinide discovered in the aftermath of a nuclear explosion.

Atomic Number: 99

Symbol: Es

Atomic Mass: [252] u (most stable isotope)

Category: Actinide

State at Room Temperature: Solid

Discovered By: Albert Ghiorso et al. (1952)

⚛️ Atomic Structure of Einsteinium

Einsteinium has ninety-nine protons, one hundred fifty-three neutrons (in its most stable isotope, Einsteinium-252), and ninety-nine electrons, with two in its outer shell.

💡 Did you know? Einsteinium was found in debris from the first hydrogen bomb test!

🔬 Einsteinium Properties

Einsteinium is radioactive, silvery, and dense. It has a melting point of about 860°C (1580°F) and emits alpha radiation.

🧪 How Was Einsteinium Discovered?

In 1952, Albert Ghiorso and a team identified Einsteinium in fallout from the "Ivy Mike" hydrogen bomb test, later synthesizing it in labs.

⚡ Uses of Einsteinium

💡 Fun Facts About Einsteinium

⚠️ Safety & Precautions

Einsteinium is radioactive and a radiation hazard. It requires strict handling in controlled lab settings.

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