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103 Lr
Element Revision Sheet

Lawrencium (Lr)

Actinoids Block F Group Actinides • Period 7
Superhero Identity

"Introducing Lawrencium, the speed demon of the periodic table! Born in a flash from particle accelerators, this element exists for mere moments, leaving behind a trail of scientific wonder before vanishing into the quantum ether."

A memorable persona to anchor Lr in your mind.

Density

Synthetic

Grams per cm³

Melting Point

1627

Celsius (°C)

Atomic Radius

N/A

Radius (pm)

Everyday Connection

Daily Life Link

Imagine the dazzling, instantaneous burst of a camera flash, illuminating a moment before disappearing – that's Lawrencium's brief, brilliant existence!

Discovery & History

Year Discovered

1961

Discovered By

Albert Ghiorso

Origin of Name

"Lawrencium is named after Ernest O. Lawrence the inventor of the cyclotron."

Technical Properties

Atomic Mass

[262] u

Standard State

solid

Boiling Point

N/A

Electron Configuration

[Rn] 5f147s27p1

1st Ionization Energy

N/A

Electron Affinity

N/A

Oxidation States

[+3]
Appearance

"It's predicted to be a silvery metal, but good luck catching a glimpse – it vanishes faster than a fleeting thought!"

Did You Know?

1

Named for a Nobel Genius: Lawrencium honors Ernest O. Lawrence, the brilliant inventor of the cyclotron – the very machine used to *create* super-heavy elements like itself!

2

Born in a Lab, Not in Nature: You won't dig up Lawrencium in a mine! Every single atom ever created has been synthesized by scientists smashing lighter atoms together in a particle accelerator.

3

The Ultimate 'Blink-and-You-Miss-It' Element: Most Lawrencium isotopes vanish in milliseconds, seconds, or, at best, a few hours. Studying it is like trying to catch lightning in a bottle!

4

Heavyweight Champion: With an atomic number of 103, Lawrencium proudly sits as the last and heaviest element in the actinide series on the periodic table.

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