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Element Revision Sheet

Nobelium (No)

Actinoids Block F Group Actinides • Period 7
Superhero Identity

"The Prizefighter, a hero named for the inventor of dynamite and founder of the ultimate scientific prize."

A memorable persona to anchor No in your mind.

Density

Synthetic

Grams per cm³

Melting Point

827

Celsius (°C)

Atomic Radius

N/A

Radius (pm)

Everyday Connection

Daily Life Link

Nobelium has no everyday connection, used only in research.

Discovery & History

Year Discovered

1966

Discovered By

Joint Institute for Nuclear Research (JINR)

Origin of Name

"Nobelium is named for Alfred Nobel, the founder of the Nobel prize."

Technical Properties

Atomic Mass

[259] u

Standard State

solid

Boiling Point

N/A

Electron Configuration

[Rn] 5f147s2

1st Ionization Energy

6.65 eV

Electron Affinity

N/A

Oxidation States

[+3 +2]
Appearance

"Nobelium is a synthetic, highly radioactive metal."

Did You Know?

1

It is named in honor of Alfred Nobel, the inventor of dynamite and the founder of the Nobel Prizes.

2

The element's discovery was complex and controversial, with competing claims from research teams in Sweden, the United States, and the Soviet Union (now Russia).

3

It is the 10th transuranic element to be synthesized.

4

Experiments have shown that nobelium behaves differently in solution than other actinides, sometimes showing properties more like alkaline earth metals.

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