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109 Mt
Element Revision Sheet

Meitnerium (Mt)

Transition Metals Block D Group 9 • Period 7
Superhero Identity

"The Ghostly Genius, Meitnerium is a phantom powerhouse, appearing briefly in a flash of nuclear energy before vanishing just as quickly, leaving scientists scrambling to track its fleeting existence."

A memorable persona to anchor Mt in your mind.

Density

37.4

Grams per cm³

Melting Point

N/A

Celsius (°C)

Atomic Radius

N/A

Radius (pm)

Everyday Connection

Daily Life Link

It’s like catching a glimpse of a shooting star – incredibly rare and gone in an instant!

Discovery & History

Year Discovered

1982

Discovered By

GSI Helmholtz Centre for Heavy Ion Research

Origin of Name

"Meitnerium is named for the Austrian physicist Lise Meitner."

Technical Properties

Atomic Mass

[278] u

Standard State

solid

Boiling Point

N/A

Electron Configuration

[Rn] 5f146d77s2

1st Ionization Energy

N/A

Electron Affinity

N/A

Oxidation States

[9 8 6 4 3 1]
Appearance

"Purely theoretical in appearance; it exists for mere milliseconds before vanishing into other elements."

Did You Know?

1

It's a true scientific creation! Meitnerium doesn't exist naturally on Earth; every atom ever detected was painstakingly crafted in a lab.

2

This element is a tribute to a titan! It's named after Lise Meitner, an Austrian-Swedish physicist whose groundbreaking work explained nuclear fission – a massive deal!

3

Talk about making history! Meitnerium was the *first* element ever officially named after a non-mythological woman. Go, Lise!

4

With an atomic number of 109, Meitnerium sits way out on the edge of the periodic table, making it one of the heaviest elements ever synthesized.

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