TRIAD OF IRON Iron Fe Cobalt Co Nickel Ni

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TRIAD OF IRONIron - Fe Cobalt - Co Nickel -Ni

• Veronika Maráková
• Gabriela Kalcíková
• Petra enatová

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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)

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Obtained From ? iron ores

• Hematite

• Pyrite

• Magnetite

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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

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Using
? hemoglobin

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Using
? steel industry
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Forms of iron

• Pig iron ? 4-5 carbon, sulfur, silicon,
  phosphorus
• Cast iron ? 2-4carbon, 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

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Vocabulary

• alloy slitina
• pig iron surové elezo
• cast iron litina
• wrought iron tvárené elezo
• alloy steels legovaná ocel
• blast furnace vysoká pec

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Cobalt
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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
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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,doesnt corrode,
  dissolves in inorganic acids,reacts at high
  temperature with oxygen

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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

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Dictionary

• available-dosaitelný
• rod-prut
• wire-drát
• ore-ruda
• deposits-uloeny

Sourceswww.periodictable.com ,www.answears.com,ex
tension inorganic chemistry
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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

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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
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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

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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

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Ni dictionary
Devil's copper dáblova med Naturally occuring
vyskytující se v prírode Candlestick -
svícen Niccolite ore NiAs ruda Transition metal
prechodný kov Coins - mince Wire -
drát Stainless steel nerezavející ocel Dissolve
fairly easy rozpoutí vcelku lehce
The Big Nickel in Sudbury, Ontario,