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atomic number 85

 

Definitions from WordNet

Noun atomic number 85 has 1 sense
  1. astatine, At, atomic number 85 - a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
    --1 is a kind of chemical element, element; halogen

Definitions from the Web

Atomic Number 85

Atomic number 85, also known as astatine, is a chemical element with the symbol At and atomic number 85. It is a highly radioactive element and the rarest naturally occurring element on Earth. Astatine is a member of the halogen family and is considered to be a metalloid.

Senses

Sense 1: Chemical Element

Astatine is a chemical element that belongs to the halogen family and possesses the atomic number 85. It is highly radioactive and has a short half-life.

Sample sentence: Astatine (atomic number 85) is the heaviest halogen element on the periodic table.

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