Periodic Table Definition, mass & chemical names Interactive Periodic Table 1 18 1 H Hydrogen1.008 2 Atomic No.(#) Symbol NameAtomic mass [Orbital arrangement] [Rn]7s2 5f6d Metalloid Nonmetals Other nonmetals Halogens Noble gases Metals ...
Boyle:Boyle created the law of gases and serves as pioneer of modern chemistry Callippus:This Greek astronomer accurately determined the length of the seasons Cleomedes:Cleomedes accumulated astronomy basics in his textbookOn the Circular Motions of the Celestial Bodies Crick:This scientist played a ...
Element Names Elements Known in AntiquityElements from the Time of the AlchemistsElement Names from Celestial BodiesElement Names from MythologyElements With Color NamesNames from Countries and Places as Element NamesThe Family of Noble GasesPersonal Names as Element NamesSymbols for the Elements Building...
blennynoun(n.) A marine fish of the genus Blennius or family Blenniidae; -- so called from its coating of mucus. The species are numerous. catchpennynoun(n.) Some worthless catchpenny thing. adjective(a.) Made or contrived for getting small sums of money from the ignorant or unwary; as...
Elements that have names ending with -inebelong to a group of elements called halogens. Halogens are extremely reactive and readily form compounds. Element names ending with -onare noble gases, which are inert or nonreactive gases at room temperature. ...
An attorney who sufficiently excuses the absence of another. examiner noun (n.) One who examines, tries, or inspects; one who interrogates; an officer or person charged with the duty of making an examination; as, an examiner of students for a degree; an examiner in chancery, in the ...
At room temperature (298 K) and a pressure of one – Cs, Fr, Hg, and Br 2 are liquids; H 2 , He, N 2 ,O 2, F 2 , Ne, Cl 2 , Ar, Kr, Xe, and Rn are gases; and the other elements are metals. Ga would melt in your hand since its melting point is 302.9 K.Eleme...
NobleGases•IonicCompounds•composedofpositiveandnegativeions.•usuallyformedfromametalandnon-metal.•theseelementsarenotattachedtooneanother.•IonicCompoundscon’t•ExamplesNaClCaBr2KI•Definition•showsthekindandnumbersofatomsinthesmallestrepresentativeunitofthesubstance.•i.e.NaCl•Aformulaunitis...
of Meddle adjective (a.) Meddlesome. meddler noun (n.) One who meddles; one who interferes or busies himself with things in which he has no concern; an officious person; a busybody. meddlesome adjective (a.) Given to meddling; apt to interpose in the affairs of others; officiously ...