- eka-astatine
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An alternative name for the element with atomic number 117 as yet undiscovered. It systematic name is ununseptium.
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eka-astatine
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Astatine — (pronEng|ˈæstətiːn) is a radioactive chemical element with the symbol At and atomic number 85. It is the heaviest of the discovered halogens. Characteristics This highly radioactive element has been confirmed by mass spectrometers to behave… … Wikipedia
ununseptium — noun /uːnuːnˈsɛptiəm/ The systematic element name for the chemical element with atomic number 117 (symbol Uus) Syn: eka astatine … Wiktionary
ekaiodine — eka·io·dine .ek ə ī ə .dīn, .ā kə , əd ən, ə .dēn n ASTATINE … Medical dictionary
Francium — radon ← francium → radium Cs ↑ Fr ↓ Uue … Wikipedia
Timeline of chemical elements discoveries — The discovery of the elements known to exist today is presented here in chronological order. The elements are listed generally in the order in which each was first defined as the pure element,[clarification needed] as the exact date of discovery… … Wikipedia
Metalloid — 13 14 15 16 17 2 B Boron … Wikipedia
Alkali metal — Group → 1 ↓ Period 2 3 Li 3 … Wikipedia
List of chemical element name etymologies — This is the list of etymologies for all chemical element names: Name Symbol Language of origin Word of origin Meaning Symbol origin Description Actinium Ac Greek ἀκτίς (aktis) beam Greek aktinos ἀκτίς, ἀκτῖνος (aktis; aktinos), meaning beam (ray) … Wikipedia
Ununoctium — ununseptium ← ununoctium → ununennium Rn ↑ Uuo ↓ (Uho) … Wikipedia
periodic law — /pear ee od ik, pear /, Chem. 1. the law that the properties of the elements are periodic functions of their atomic numbers. 2. Also called Mendeleev s law. (originally) the statement that the chemical and physical properties of the elements… … Universalium
