TRIAD OF IRON
Iron - Fe
Cobalt - Co
Nickel -Ni
Veronika Mařáková
Gabriela Kalčíková
Petra Ženatová
Iron - Fe
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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
►
Magnetite
►
Pyrite
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
Using  hemoglobin
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Using  steel industry
Forms of iron
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,
► Pig
sulfur,
phosphorus, silicon
iron  0,2% carbon
► Alloy steels  chromium, vanadium, molybdenum,
► Wrought
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
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,