Platinum

Platinum is a shiny, silver-white metal.

It is very rare in the Earth. Because it is hard to find, it is worth a lot of money.

This metal does not rust or wear away easily. It stays strong even when it is very hot. This makes it great for making fine jewelry.

People use platinum for many important jobs. It is a part of tools for doctors. It is also used in some parts of cars.

Some special platinum mixes help treat sick people. This is a way to help fight cancer. It is a very helpful metal.

Scientists find platinum in rocks and river sands.

It is a truly amazing metal.

Platinum is a rare, silver-white metal.

It is very hard to find in the Earth's crust. Because it is so scarce, it is very valuable.

This metal is very strong. It does not rust or wear away easily. Even at high heat, it stays stable. This makes it a noble metal.

It is also very easy to shape. We call this being ductile. Platinum is more ductile than gold or silver.

People use platinum for many big jobs. It is a part of catalytic converters. These are parts in cars that help clean exhaust.

It is also used in dental tools and jewelry. Some platinum mixes help doctors treat cancer.

Scientists find platinum in many places. It can be found in river sands. It is also found in rocks with nickel and copper.

Much of the world's platinum comes from South Africa. A place called the Merensky Reef holds about 75% of it. This is a very special metal.

Platinum is a rare and special metal. It has a silverish-white color and a shiny look.

This metal is very dense and heavy. It is also very easy to shape. Scientists call this being ductile. Platinum is actually more ductile than gold, silver, or copper.

Because it is so hard to find, it is a very valuable precious metal. It is part of a group of elements called the platinum group.

Platinum is famous for being a noble metal. This means it does not corrode or rust easily. It stays stable even when it gets very hot.

Most of the time, platinum is found in nature all by itself. It does not like to combine with other things. However, it can be dissolved by a hot liquid called aqua regia. This liquid is a mix of nitric and hydrochloric acids. Platinum is also very useful in science because it can help speed up chemical changes. This special job is called acting as a catalyst.

People have used platinum for a long time. Native Americans in South America used it to make objects.

European writers knew about it in the 1500s. However, scientists did not fully understand it until much later. In 1748, Antonio de Ulloa published a report about a new metal from Colombia.

Later, a scientist named Gerhard Ertl won a Nobel Prize in 2007. He studied how platinum helps clean up gases in cars. This work helped us understand how catalytic converters work.

Finding platinum is a big job because it is so rare. It is found in very small amounts in the Earth's crust.

Much of the world's platinum comes from South Africa. A geologist named Hans Merensky found a huge supply there in 1924. He found a layer called the Merensky Reef. This one place holds about 75% of the world's known platinum. Other large deposits are found in Russia and Canada.

In 2010, South Africa produced most of the world's platinum.

We use platinum in many parts of our daily lives. It is a key part of catalytic converters in cars.

It is also used to make jewelry and dental tools. Doctors even use platinum compounds like cisplatin to treat certain types of cancer. In factories, it helps people work with molten glass. This is because the hot glass does not stick to the platinum. It is even used in very precise thermometers. Platinum helps us do many important things every day.

Platinum is a dense and precious chemical element. It is represented by the symbol Pt and has the atomic number 78. This silverish-white metal belongs to the platinum group of elements. It is also found in group 10 of the periodic table. Platinum is highly valued because it is both rare and incredibly useful.

Scientists classify it as a noble metal. This means it is highly unreactive and does not corrode easily. It stays stable even when exposed to very high temperatures.

As a metal, platinum has unique physical properties. It is highly ductile, which means it can be stretched into thin wires. It is also malleable, so it can be hammered into different shapes. In fact, platinum is more ductile than gold, silver, or copper.

While it is generally unreactive, it can be attacked by certain elements. Chlorine, bromine, iodine, and sulfur can react with it. It also reacts vigorously with fluorine to create platinum tetrafluoride. Most notably, platinum will dissolve in a hot liquid called aqua regia. This liquid is a mixture of nitric and hydrochloric acids.

Platinum exists in several different forms through its isotopes. There are six naturally occurring isotopes of platinum. The most common one is Pt-195, which makes up 33.83% of all platinum. This specific isotope is very important for NMR spectroscopy. This is a scientific method used to study the structure of molecules. The least common natural isotope is Pt-190. It is radioactive and has a half-life of 4.83 years. Beyond the natural versions, scientists have created 38 synthetic isotopes. This brings the total number of known platinum isotopes to 44.

Finding platinum in nature is a difficult task. It is one of the rarer elements in the Earth's crust. Its average abundance is only about 5 micrograms per kilogram. Because it is so scarce, only a few hundred metric tonnes are produced each year.

Platinum is often found in nickel and copper ores. It can also be found in native deposits as pure metal. It frequently occurs in alluvial sands, which are deposits left by rivers. In these river settings, platinum is often found chemically uncombined. This means the metal atoms stay together in their pure form.

History shows that humans have interacted with platinum for a long time. Pre-Columbian South American natives used alluvial platinum to create artifacts.

European writers mentioned the metal as early as the 16th century. However, scientific understanding grew much later. In 1748, Antonio de Ulloa published a report on a new metal from Colombia.

A major discovery occurred in 1924. A geologist named Hans Merensky found a massive supply in South Africa. He discovered the Merensky Reef within the Bushveld Igneous Complex. This single layer contains about 75% of the world's known platinum reserves.

Platinum's significance is seen in its massive industrial and medical uses. It is a key component in catalytic converters for cars.

These devices help clean exhaust gases. In 2007, Gerhard Ertl won the Nobel Prize for studying this process. Platinum is also used in dentistry, jewelry, and electrical contacts. It is even used in the glass industry. Molten glass does not "wet" platinum, so the metal can manipulate the glass easily. In medicine, platinum compounds like cisplatin are used in chemotherapy. These drugs help treat certain types of cancer by targeting DNA.

Today, the global production of platinum is concentrated in a few places. In 2010, South Africa was the top producer with a 77% share. Russia followed with 13% of the production. Total world production in 2010 was 153 tonnes. Other important mining areas include the Sudbury Basin in Canada and the Ural Mountains in Russia.

Platinum is also found in slightly higher amounts on the Moon. It can also be found in meteorites. This connection to space and Earth's history makes the study of platinum very important for many different scientific fields.