platinum (Pt), chemical element, the best known and most widely used of the six platinum metals of Groups 8–10, Periods 5 and 6, of the periodic table. A very heavy, precious, silver-white metal, platinum is soft and ductile and has a high melting point and good resistance to corrosion and chemical attack.
Is there an element Pt?
Platinum, Pt, is an element in group 10, period 6, on the periodic table with the atomic number 78. Platinum is a heavy, malleable, ductile, grey-white transition metal, used in many ways. Platinum; Pt; a silvery white metal when pure.
What is the name of PT?
Atomic Mass195.08uElectron Configuration[Xe]6s14f145d9Oxidation States+4, +2Year Discovered1735
Is Pt toxic?
The health effects of platinum are strongly dependent upon the kind of bonds that are shaped and the exposure level and immunity of the person that is exposed. Finally, a danger of platinum is that it can cause potentiation of the toxicity of other dangerous chemicals in the human body, such as selenium.What group and period is PT in?
Group101768.2°C, 3214.8°F, 2041.4 KPeriod63825°C, 6917°F, 4098 KBlockd21.5Atomic number78195.084State at 20°CSolid195Pt
What does platinum do to the body?
Platinum metal is biologically inert, whereas soluble platinum compounds (e.g., halogenated salts) encountered in occupational settings can cause platinum salt hypersensitivity with symptoms that include bronchitis and asthma after inhalational exposure and contact dermatitis after skin exposure.
How long do chemicals stay in pressure treated wood?
More than 90 percent of all outdoor wooden structures in the United States are made with arsenic-treated lumber. Using wipe tests from 263 decks, playsets, picnic tables and sandboxes in 45 states, researchers found that arsenic levels on wood surfaces remain high for 20 years — the entire useful life of the wood.
Why is platinum so rare?
In general, this rare metal is found in deposits of small grains, dust, or small nuggets that averages from 50 to 75% in purity. Small amounts of platinum are obtained by mining other products. However, this metal is normally found in ores that are mixed with other metals like palladium and gold.How is platinum isolated?
Today, platinum is still extracted using a technique similar to that developed by Wollaston. Samples containing platinum are dissolved in aqua regia, are separated from the rest of the solution and byproducts, and are melted at very high temperatures to produce the metal.
Why is platinum so expensive?The main reason for this is that precious metals are priced by weight, and platinum is much denser than gold, meaning it will be heavier. Another reason why platinum rings are more valuable than gold is because the metal is much rarer.
Article first time published onHow many chemical families are in the periodic table?
In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the f-block columns (between groups 2 and 3) are not numbered.
Is it OK to use pressure treated wood in a vegetable garden?
Modern Pressure-Treated Lumber According to the American Wood Protection Association and the U.S. Environmental Protection Agency, lumber treated with ACQ is safe for garden use. Its durability and nontoxicity make it among the best woods for raised garden beds.
How long does PT deck last?
Ordinary Maintenance On average, a deck made from pressure-treated pine will last 15 to 20 years before succumbing to the accumulated stress of direct sunlight, rain, salty ocean breezes, insect infestation and repeated cycles of thermal expansion and contraction.
How long does PT wood last?
It depends on the climate, the type of wood, its uses, and how well it’s maintained. While pressure treated poles can stay up to 40 years without any signs of rot or decay, decks and flooring might only last around 10 years.
Who can wear platinum?
It can be worn by anyone and with anything – so you will not have to worry about it when choosing a piece. – Lifelong Elegance – As already mentioned, platinum is for a lifetime. You may choose it for engagement rings, wedding rings, cocktail rings or everyday fashion rings.
What is the most expensive metal?
Palladium is the most expensive of the four major precious metals – gold, silver and platinum being the others.
What foods contain platinum?
Platinum concentrations were highest in eggs and offal, with a mean concentration of 5.8 ng/g, followed, in decreasing order, by meat (3.2 ng/g), grain products (3.2 ng/g), fish (1.8 ng/g), fruit and vegetables (0.82 ng/g) and dairy products (0.27 ng/g).
Is platinum a gold?
While Platinum is a naturally white metal, White Gold is made by combining pure gold (which is yellow in colour) with alloying metals such as Palladium.
What is the rarest element on earth?
A team of researchers using the ISOLDE nuclear-physics facility at CERN has measured for the first time the so-called electron affinity of the chemical element astatine, the rarest naturally occurring element on Earth.
What chemical family does platinum belong to?
Platinum is a silvery metallic chemical element, a member of the six transition elements in Group VIII of the periodic table known collectively as the platinum metals (ruthenium, rhodium, palladium, osmium, iridium, and platinum).
What is the chemical symbol of fluorine?
fluorine (F), most reactive chemical element and the lightest member of the halogen elements, or Group 17 (Group VIIa) of the periodic table.
What metal is 30 times rarer than gold?
The bulk of the world’s palladium supply comes from Russia, South Africa, the U.S., and Canada. Compared to gold, the metal is 30 times rarer. Palladium can be rolled into sheets, which are then used in applications like fuel cells and solar energy.
What's more precious than gold?
The price of the precious metal palladium has soared on the global commodities markets. … At about $2,500 (£1,922) an ounce of palladium is more expensive than gold, and the pressures forcing its price up are unlikely to ease anytime soon.
Is gold more valuable than platinum?
Platinum: Despite being nearly identical in appearance, platinum is more valuable than gold. Platinum’s high price point can be attributed to its rarity and density as precious metals are often priced by their weight.
What is white gold made of?
White gold was originally developed to imitate platinum (a naturally white metal). White gold is usually an alloy containing about 75% gold and about 25% nickel and zinc. If stamped 18 karat, it would be 75% pure gold.
What exactly is white gold?
White gold is an alloy of gold and at least one white metal (usually nickel, silver, or palladium). Like yellow gold, the purity of white gold is given in karats. … The term white gold is used very loosely in the industry to describe karat gold alloys with a whitish hue.
What exactly is platinum?
Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata “silver”.
How many neutrons are in PT?
Platinum atoms have 78 electrons and 78 protons with 117 neutrons in the most abundant isotope. It is considered to be a precious metal along with silver and gold.
What is the chemical symbol for uranium?
Uranium is a silvery-white metallic chemical element in the periodic table, with atomic number 92. It is assigned the chemical symbol U. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons.
Is Diamond a metal?
Diamond is not considered as a non-metal in the exceptional category as diamond is a form of carbon. It is not classified as an element. … It is an allotrope of carbon.
How did gold get on earth?
All of the gold found on Earth came from the debris of dead stars. As the Earth formed, heavy elements such as iron and gold sank toward the planet’s core. If no other event had occurred, there would be no gold in the Earth’s crust. But, around 4 billion years ago, Earth was bombarded by asteroid impacts.
