Platino

Ang platino (Iningles platinum) mao ang elementong kimiko sa talaang peryodiko nga may simbolo nga Pt ug kaiphan nga atomik 78.

Ang platino mao ang puthaw nga transisyon.

Platinum
78Pt
Pd

Pt

Ds
Hydrogen (other non-metal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (other non-metal)
Nitrogen (other non-metal)
Oxygen (other non-metal)
Fluorine (halogen)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (other non-metal)
Sulfur (other non-metal)
Chlorine (halogen)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (other non-metal)
Bromine (halogen)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (halogen)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanoid)
Cerium (lanthanoid)
Praseodymium (lanthanoid)
Neodymium (lanthanoid)
Promethium (lanthanoid)
Samarium (lanthanoid)
Europium (lanthanoid)
Gadolinium (lanthanoid)
Terbium (lanthanoid)
Dysprosium (lanthanoid)
Holmium (lanthanoid)
Erbium (lanthanoid)
Thulium (lanthanoid)
Ytterbium (lanthanoid)
Lutetium (lanthanoid)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (halogen)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinoid)
Thorium (actinoid)
Protactinium (actinoid)
Uranium (actinoid)
Neptunium (actinoid)
Plutonium (actinoid)
Americium (actinoid)
Curium (actinoid)
Berkelium (actinoid)
Californium (actinoid)
Einsteinium (actinoid)
Fermium (actinoid)
Mendelevium (actinoid)
Nobelium (actinoid)
Lawrencium (actinoid)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
Periodic table
iridiumplatinumgold
Panagway
grayish white
Platino
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan platinum, Pt, 78
Paglitok /ˈplætnəm/
Kategoriyang elemento puthaw nga transisyon
Group, period, block 10, 6, d
Gibug-aton sa atomo 195.084
Kontorno sa elektron [Xe] 4f14 5d9 6s1
2, 8, 18, 32, 17, 1
Electron shells of platinum (2, 8, 18, 32, 17, 1)
Electron shells of platinum (2, 8, 18, 32, 17, 1)
History
Pagkadiskobre Antonio de Ulloa (1735)
First isolation Antonio de Ulloa (1735)
Physical properties
Phase magahi
Density (near r.t.) 21.45 g·cm−3
Liquid density at m.p. 19.77 g·cm−3
Melting point 2041.4 K, 1768.3 °C, 3214.9 °F
Boiling point 4098 K, 3825 °C, 6917 °F
Heat of fusion 22.17 kJ·mol−1
Heat of vaporization 469 kJ·mol−1
Molar heat capacity 25.86 J·mol−1·K−1
Vapor pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 2330 (2550) 2815 3143 3556 4094
Atomic properties
Oxidation states 6, 5, 4, 3, 2, 1, −1, −2, −3
(mildly basic oxide)
Electronegativity 2.28 (Pauling scale)
Ionization energies 1st: 870 kJ·mol−1
2nd: 1791 kJ·mol−1
Atomic radius 139 pm
Covalent radius 136±5 pm
Van der Waals radius 175 pm
Miscellanea
Crystal structure face-centered cubic
Platinum has a face-centered cubic crystal structure
Magnetic ordering paramagnetic
Electrical resistivity (20 °C) 105 nΩ·m
Thermal conductivity 71.6 W·m−1·K−1
Thermal expansion (25 °C) 8.8 µm·m−1·K−1
Speed of sound (thin rod) (r.t.) 2800 m·s−1
Tensile strength 125-240 MPa
Young's modulus 168 GPa
Shear modulus 61 GPa
Bulk modulus 230 GPa
Poisson ratio 0.38
Mohs hardness 4–4.5
Vickers hardness 549 MPa
Brinell hardness 392 MPa
CAS registry number 7440-06-4
Most stable isotopes
Main article: Isotopes of platinum
iso NA half-life DM DE (MeV) DP
190Pt 0.014% 6.5×1011 y α 3.18 186Os
192Pt 0.782% >4.7×1019 y α 2.4181 188Os
193Pt syn 50 y ε - 193Ir
194Pt 32.967% 194Pt is stable with 116 neutrons
195Pt 33.832% 195Pt is stable with 117 neutrons
196Pt 25.242% 196Pt is stable with 118 neutrons
198Pt 7.163% >3.2×1014 y α 0.0870 194Os
ββ 1.0472 198Hg
· r

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