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neptunium

Primary Information
Secondary Information

Definition

Neptunium is a radioactive element that is not found naturally on Earth. It is the first transuranic element, meaning that it has an atomic number greater than uranium. Neptunium is named after Neptune, the Roman god of the sea.

Neptunium is a silvery-white metal that is very radioactive. It is also very toxic. Neptunium is used in nuclear reactors and in some types of nuclear weapons.

How can the word be used?

The word "neptunium" is related to the word "Neptune.".

neptunium

Different forms of the word

Noun: A radioactive chemical element with the symbol Np and atomic number 93.

Adjective: Relating to neptunium.

Etymology

The word "neptunium" comes from the Latin word "Neptunus," which is the god of the sea in Roman mythology.

The word "neptunium" was first used in 1940 by Edwin McMillan and Philip Abelson, who discovered the element. They named it after Neptune, the Roman god of the sea, because it was the ninth transuranic element to be discovered, and Neptune is the ninth planet in the solar system.

Question

What does neptunium look like?