Most reactive element
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FLUORINEMost reactive element
caesiumrare, highly reactive, soft, metallic element of the alkali metal group, used chiefly in photoelectric cells. Symbol: Cs; at. wt.: 132.905; at. no.: 55; sp. gr.: 1.9 at 20┬░C; melts at 28.5┬░C
caesiumsrare, highly reactive, soft, metallic element of the alkali metal group, used chiefly in photoelectric cells. Symbol: Cs; at. wt.: 132.905; at. no.: 55; sp. gr.: 1.9 at 20┬░C; melts at 28.5┬░C
cesiumrare, highly reactive, soft, metallic element of the alkali metal group, used chiefly in photoelectric cells. Symbol: Cs; at. wt.: 132.905; at. no.: 55; sp. gr.: 1.9 at 20┬░C; melts at 28.5┬░C
phosphorusThe chemical element of atomic number 15, a poisonous, combustible nonmetal that exists in two common allotropic forms, white phosphorus, a yellowish waxy solid that ignites spontaneously in air and glows in the dark, and red phosphorus, a less reactive form used in making matches
HYDROGENMost abundant element
IRONElement in most meteorites
IRONMost common element on Earth, by mass
NEONFifth-most abundant element in the universe
OXYGENMost abundant element in the earth's crust
revolvingTreat as the most important point or element
revolvedTreat as the most important point or element
revolveTreat as the most important point or element
SODIUMSixth most abundant element in the Earth's crust
revolvesTreat as the most important point or element
SILICICPertaining to the second most common element in the Earth's crust
greatestDenoting the element of something that is the most important or the most worthy of consideration
anthropocentricRegarding humankind as the central or most important element of existence, esp. as opposed to God or animals
fermiuma transuranic element artificially produced by neutron bombardment of plutonium. Symbol: Fm; atomic no: 100; half-life of most stable isotope, 257Fm: 80 days (approx.)
hafniumgray, toxic metallic element with a high melting point (over 2000┬░C), found in most zirconium minerals. Symbol: Hf; at. wt.: 178.49; at. no.: 72; sp. gr.: 12.1
cesiuma silver-white soft ductile element of the alkali metal group that is the most electropositive element known and that is used especially in photoelectric cells see element table
tantalumsgray, hard, rare, metallic element occurring in columbite and tantalite and usually associated with niobium: used, because of its resistance to corrosion by most acids, for chemical, dental, and surgical instruments and apparatus. Symbol: Ta; at
irona silver-white malleable ductile magnetic heavy metallic element that readily rusts in moist air, occurs native in meteorites and combined in most igneous rocks, is the most used of metals, and is vital to biological processes see element table
ironsa silver-white malleable ductile magnetic heavy metallic element that readily rusts in moist air, occurs native in meteorites and combined in most igneous rocks, is the most used of metals, and is vital to biological processes see element table