Name: Periodic Memory
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Element #1; a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe

Hydrogen

Element #2; a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)

Helium

Element #3; a soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals

Lithium

Element #4; a light strong brittle grey toxic bivalent metallic element

Beryllium

Element #5; a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder

Boron

Element #6

Carbon

Element #7; a common nonmetallic element that is normally a colorless odorless tasteless inert diatomic gas; constitutes 78 percent of the atmosphere by volume; a constituent of all living tissues

Nitrogen

Element #8; a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas; constitutes 21 percent of the atmosphere by volume; the most abundant element in the earth's crust

Oxygen

Element #9; a nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite

Fluorine

Element #10; a colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts

Neon

Element #11; a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)

Sodium

Element #12; a light silver-white ductile bivalent metallic element; in pure form it burns with brilliant white flame; occurs naturally only in combination (as in magnesite and dolomite and carnallite and spinel and olivine)

Magnesium

Element #13; a silvery ductile metallic element found primarily in bauxite

Aluminum

Element #14; a tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors

Silicon

Element #15

Phosphorus

Element #16; an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)

Sulfur

Element #17; a common nonmetallic element belonging to the halogens; best known as a heavy yellow irritating toxic gas; used to purify water and as a bleaching agent and disinfectant; occurs naturally only as a salt (as in sea water)

Chlorine

Element #18; a colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere

Argon

Element #19; a light soft silver-white metallic element of the alkali metal group; oxidizes rapidly in air and reacts violently with water; is abundant in nature in combined forms occurring in sea water and in carnallite and kainite and sylvite

Potassium

Element #20; a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals

Calcium

Element #21; a white trivalent metallic element; sometimes classified in the rare earth group; occurs in the Scandinavian mineral thortveitite

Scandium

Element #22; a light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite

Titanium

Element #23; a soft silvery white toxic metallic element used in steel alloys; it occurs in several complex minerals including carnotite and vanadinite

Vanadium

Element #24; a hard brittle multivalent metallic element; resistant to corrosion and tarnishing

Chromium

Element #25; a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals

Manganese

Element #26

Iron

Element #27; a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition

Cobalt

Element #28

Nickel

Element #29

Copper

Element #30; a bluish-white lustrous metallic element; brittle at ordinary temperatures but malleable when heated; used in a wide variety of alloys and in galvanizing iron; it occurs naturally as zinc sulphide in zinc blende

Zinc

Element #31; a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores

Gallium

Element #32; a brittle grey crystalline element that is a semiconducting metalloid (resembling silicon) used in transistors; occurs in germanite and argyrodite

Germanium

Element #33; a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar

Arsenic

Element #34; a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)

Selenium

Element #35; a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water

Bromine

Element #36; a colorless element that is one of the six inert gasses; occurs in trace amounts in air

Krypton

Element #37; a soft silvery metallic element of the alkali metal group; burns in air and reacts violently in water; occurs in carnallite and lepidolite and pollucite

Rubidium

Element #38; a soft silver-white or yellowish metallic element of the alkali metal group; turns yellow in air; occurs in celestite and strontianite

Strontium

Element #39; a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys

Yttrium

Element #40; a lustrous grey strong metallic element resembling titanium; it is used in nuclear reactors as a neutron absorber; it occurs in baddeleyite but is obtained chiefly from zircon

Zirconium

Element #41; a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium

Niobium

Element 42; a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel

Molybdenum

Element #43; a crystalline metallic element not found in nature; occurs as one of the fission products of uranium

Technetium

Element #44; a rare polyvalent metallic element of the platinum group; it is found associated with platinum

Ruthenium

Element #45; a white hard metallic element that is one of the platinum group and is found in platinum ores; used in alloys with platinum

Rhodium

Element #46; a silver-white metallic element of the platinum group that resembles platinum; occurs in some copper and nickel ores; does not tarnish at ordinary temperatures and is used (alloyed with gold) in jewelry

Palladium

Element #47

Silver

Element #48; a soft bluish-white ductile malleable toxic bivalent metallic element; occurs in association with zinc ores

Cadmium

Element #49; a rare soft silvery metallic element; occurs in small quantities in sphalerite

Indium

Element #50; a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)

Selenium

Element #51; a metallic element having four allotropic forms; used in a wide variety of alloys; found in stibnite

Antimony

Element #52; a brittle silver-white metalloid element that is related to selenium and sulfur; it is used in alloys and as a semiconductor; occurs mainly as tellurides in ores of copper and nickel and silver and gold

Tellurium

Element #53

Iodine

Element #54; a colorless odorless inert gaseous element occurring in the earth's atmosphere in trace amounts

Xenon

Periodic Memory

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