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Platium: It´S Chemical Properties Essay

680 words - 3 pages

Platinum
It's chemical properties. What is it used for?

Boris Nguyen
SCH3U
Eva Strazimiri
November 25th, 2013
Platinum
Symbol: Pt
Atomic number: 78
Atomic mass: 195,084
Group 10 - transition metal
It was discovered by Julius Scaliger in 1735.

Structure
Number of electrons: 78
Number of protons: 78
Number of neutrons: 117
Electronic configuration: 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d10 4f14 5s2 5p6 5d9 6s1

Physical Properties
1) It is a solid metal (at room temperature)
2) Color: steel-gray to dark gray, shiny
3) malleable
4) ductile
5) Melting point: 3214 °F=1768 °C
6) Boiling point : 6917 °F=3825 °C
7) Insoluble in water
8) Good electrical and thermal conductor

Chemical Properties
1) Ions: Pt+2, Pt+4, Pt+1, Pt+3
2) non-corrosive metal - can only be corroded by halogens, cyanides or sulfur.
3) non-toxic
4) resistant to tarnishing
5) Synthesis reaction
 Pt+3F2=PtF6
6) Single replacement reaction
Pt+NaCl=PtCl+Na
7) Decomposition reaction
PtI=Pt+I2
8) Reaction with air - none
9) Reaction with 3 M HNO3 - none
10) Reaction with 6 M HCl - none
11) Reaction with 6 M NaOH - none
12) Chlorides: PtCl2, PtCl4
13) Resistant to most common acids. Reacts with aqua regia to form aqueous
chloroplatinic acid
Pt +4HNO3+6HCl=H2PtCl6+4 NO2+4 H2O

Isotopes
Platinum has an infinite number of isotopes. 6 of them are naturally abundant isotopes:
190Pt, 192Pt, 194Pt, 195Pt, 196Pt, and 198Pt. 192Pt, 194Pt, 195Pt, 196Pt, 198Pt
isotopes are stable and the 190Pt isotope is unstable, it is radioactive. The most
abundant isotope are 195Pt (34%), 194Pt(33%) and 196Pt(25%).

Where Platinum can be found?
Platinum is one of the rarest and the most expensive metals. However, it can be found
mixed with some other metals such as nickel, gold and copper. The place of findings
are South Africa, Russia, Canada and USA. According to London Platinum and
Palladium Market the price for it is 1396,00 per oz(November 23, 2013). The price for
Platinum is unpredictable. It can rise and then drop...

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