Definition of Atomic number 81

1. Noun. A soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores.

Exact synonyms: Thallium, Tl
Generic synonyms: Metal, Metallic Element
Substance meronyms: Blende, Sphalerite, Zinc Blende

Lexicographical Neighbors of Atomic Number 81

atomic number 68
atomic number 69
atomic number 7
atomic number 70
atomic number 71
atomic number 72
atomic number 73
atomic number 74
atomic number 75
atomic number 76
atomic number 77
atomic number 78
atomic number 79
atomic number 8
atomic number 80
atomic number 81 (current term)
atomic number 82
atomic number 83
atomic number 84
atomic number 85
atomic number 86
atomic number 87
atomic number 88
atomic number 89
atomic number 9
atomic number 90
atomic number 91
atomic number 92
atomic number 93
atomic number 94

Literary usage of Atomic number 81

Below you will find example usage of this term as found in modern and/or classical literature:

1. Science by American Association for the Advancement of Science (1917)
"... evident that the radio-active elements are now disintegrating, but the radioactive series of elements includes only those of atomic number 81 (thallium) ..."

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