TRIAD OF IRON Iron - Fe Cobalt - Co Nickel -Ni Veronika Mařáková Gabriela Kalčíková Petra Ženatová

Iron - Fe * Atomic Number: 26 * Atomic Mass: 55.845 * Melting Point: 1535.0 °C * Boiling Point: 2750.0 °C * Crystal Structure: Cubic * Density 293 K: 7.86 g/cm3 * Color: Silvery * Date of Discovery: Known to the ancients * Discoverer: Unknown * Name Origin: Latin * Symbol Origin: From the Latin word ferrum (iron)

Obtained From  iron ores Hematite Pyrite Magnetite

Compounds 2 major series of chemical compounds  the bivalent iron (II)  the trivalent iron (III) For example: FeSO4.7H2O ferrous sulfate heptahydrate (green vitriol) FeCl3.6H2O ferric chloride hexahydrate Fe2O3 ferric oxide KFe2(CN)6 prussian blue

 hemoglobin Using *

Using  steel industry

Forms of iron Pig iron  4-5% carbon, sulfur, silicon, phosphorus Cast iron  2-4%carbon, 1-6% silicon, manganese Carbon steel  0,5 and 1,5% carbon, manganese, sulfur, phosphorus, silicon Wrought iron  0,2% carbon Alloy steels  chromium, vanadium, molybdenum, nickel, tungsten Iron (III)  use in magnetic storage in computers

Vocabulary alloy – slitina pig iron – surové železo cast iron – litina wrought iron – tvářené železo alloy steels – legovaná ocel blast furnace – vysoká pec

Cobalt

Number of Energy Levels: 4 Characteristics Name: cobalt Symbol: Co Atomic number: 27 Atomic weight: 58.933200 Group number: 9 Period number: 4 Block: d-block Number of Energy Levels: 4 First Energy Level: 2 Second Energy Level: 8 Third Energy Level: 15 Fourth Energy Level: 2

Physical and chemical characteristics Standard state: solid at 298 K Colour: lustrous, metallic, greyish tinge Classification: Metallic Availability: cobalt is available in many forms including pieces, powder, rod, and wire. Reactivity :is lower then Fe,doesn´t corrode, dissolves in inorganic acids,reacts at high temperature with oxygen

Appaerance and Application Cobalt is present in meteorites. Ore deposits are found in Zaire, Morocco and Canada Compounds of cobalt were used to colorate glass Cobalt is used for production of special steel

Dictionary available-dosažitelný rod-prut wire-drát ore-ruda deposits-uloženy Sources:www.periodictable.com ,www.answears.com,extension inorganic chemistry

Nickel Chemical Symbol: Ni Atomic Number: 28 Weight: 58.71 Melting Point: 1 455 ºC Boiling Point: 2 730 ºC Density: 8.90 g/cm3 at 25 ºC Electron configuration: [Ar] 3d8 4s2

Nickel The name nickel comes from the German word "kupfernickel" meaning Devil's copper or Old Nicholas's copper. Nickel was used by the Chinese in naturally occuring nickel-copper alloys for over two thousand years. In 1751 Swedish chemist, Alex Frederic Constedt, isolated the metal from niccolite ore. Chinese nickel-copper candlesticks

Ni – chemical properties in period 4, group 10 of the period. table is transition metal in compounds is almost exclusively in the +2 oxidation state many nickel compounds dissolve fairly easy in water and have a green color it forms compounds (↑t) with B, Si, P, S and halogens

Ni – physical properties and uses silvery white, magnetic metal, hard, corrosion resistant, high electrical and thermal conductivities is alloyed with other metals to improve their strength and resistance to corrosion is also used to manufacture some types of coins and batteries a single kilogram of nickel can be drawn into 300 kilometers of wire

Ni – dictionary Devil's copper – ďáblova měď Naturally occuring – vyskytující se v přírodě Candlestick - svícen Niccolite ore – NiAs ruda Transition metal – přechodný kov Coins - mince Wire - drát Stainless steel – nerezavějící ocel Dissolve fairly easy – rozpouští vcelku lehce The Big Nickel in Sudbury, Ontario,