What do nickel and technetium have in common

Nickel is a natural element and technetium is an artificial element. For example technetium is placed in the group 7 and period 5 of the periodic table and nickel is placed in the group 10 and period 4 of the table. The difference is that technetium is radioactive. Rhenium is similar to technetium. The first 82 elements are all stable and not radioactive, except for technetium and promethium. Most elements after 82 are unstable.

Iron, Nickel, Cobalt. Technetiumm is largely used as tracer in radiodiagnostic. Technetium is used as standard source for beta radiation.

Technetiumm is used as tracer in environmental studies. Technetium has protons, neutrons and electrons. It also happens to be radioactive. Technetium is in the group 7 manganese group of the periodic table and is similar to rhenium. All of the isotopes of technietium are relatively unstable.

This is the only element which exhibits this propoerty of all of the elements in the lower periodic table. Group 7 manganese group of the periodic table contain manganese, technetium, rhenium and bohrium. Technetium is placed in the group 7 manganese group and period 5 of the periodic table of elements. Technetium is one of the rarest elements on the planet.

Therefore no one knows if someone is allergic to it and what could cause it. You would expect manganese and rhenium to be similar to technetium, because they are in the same column of the periodic table. Technetium, promethium, and all elements heavier than bismuth are radioactive. Log in. Elements and Compounds. Metal and Alloys. The gamma-ray emitting technetiumm metastable is widely used for medical diagnostic studies.

Several chemical forms are used to image different parts of the body. Technetium is a remarkable corrosion inhibitor for steel, and adding very small amounts can provide excellent protection. This use is limited to closed systems as technetium is radioactive. Biological role. Technetium has no known biological role. It is toxic due to its radioactivity. Natural abundance. The metal is produced in tonne quantities from the fission products of uranium nuclear fuel.

It is obtained as a grey powder. Early chemists puzzled over why they could not discover element number 43, but now we know why — its isotopes are relatively short-lived compared to the age of the Earth, so any technetium present when the Earth formed has long since decayed. Help text not available for this section currently. Elements and Periodic Table History. Technetium long tantalised chemists because it could not be found. The longest lived isotope has a half life of 4 million years. Even so, some technetium atoms are produced as uranium undergoes nuclear fission and there is about 1 milligram of technetium in a tonne of uranium.

Claims in the s to have found this element, or at least to have observed its spectrum, cannot be entirely discounted. He investigated molybdenum from California which had been exposed to high energy radiation and he found technetium to be present and separated it. Today, this element is extracted from spent nuclear fuel rods in tonne quantities. Atomic data. Glossary Common oxidation states The oxidation state of an atom is a measure of the degree of oxidation of an atom.

Oxidation states and isotopes. Glossary Data for this section been provided by the British Geological Survey. Relative supply risk An integrated supply risk index from 1 very low risk to 10 very high risk. Recycling rate The percentage of a commodity which is recycled. Substitutability The availability of suitable substitutes for a given commodity.

Reserve distribution The percentage of the world reserves located in the country with the largest reserves. Political stability of top producer A percentile rank for the political stability of the top producing country, derived from World Bank governance indicators. Political stability of top reserve holder A percentile rank for the political stability of the country with the largest reserves, derived from World Bank governance indicators. Young's modulus A measure of the stiffness of a substance.

Shear modulus A measure of how difficult it is to deform a material. Bulk modulus A measure of how difficult it is to compress a substance. Vapour pressure A measure of the propensity of a substance to evaporate.

Pressure and temperature data — advanced. Listen to Technetium Podcast Transcript :. You're listening to Chemistry in its element brought to you by Chemistry World , the magazine of the Royal Society of Chemistry.

For Chemistry in its element this week, we are meeting the man who made the periodic table and also hearing the story of the element that he predicted would exist, but never lived to see it discovered.

That man was Mendeleev and with the tale of technetium, the element he foresaw, here's Mark Peplow. There's a sculpture outside the Slovak University of Technology in Bratislava, which portrays Mendeleev in all his hirsute glory right at the centre of a sunburst of elements. The sculpture makes it clear that Mendeleev is no mere bookkeeper of elements; instead he was the creative spark behind their existence.

For a while other scientists had tried to create ways of ordering the known elements. Mendeleev created a system that could predict the existence of elements, not yet discovered. That's what made the idea so revolutionary. When he presented the table to the world in , it contained four prominent gaps, one of these was just below manganese and Mendeleev predicted an element with atomic weight 43 and properties similar to its neighbours would be found to fill that gap.

He named the missing element ekamanganese. After the other absentees were found and subsequently named Scandium, Gallium and Germanium, the search for ekamanganese intensified. He actually went on to share the Nobel Prize in physics for discovering the antiproton. So he didn't have much experience of chemistry, but the mineralogist, Carlo Perrier did and together they eventually managed to isolate two radioactive isotopes of the new element, which they named technetium.

The name is from the Greek word for artificial, since technetium was the very first man-made element, yet despite the name, technetium is found naturally albeit in tiny traces. It's a product of spontaneous uranium fission and although there are no stable isotopes of technetium, you can usually find about a nanogram of technetium in every 5 kilos of the uranium ore, pitchblende.

That's not to say that the stuff is scarce, it's actually a common waste product from nuclear power stations and it's estimated that several tons of technetium have been released into the environment as low level waste over the past half century. But technetium is also used in about 20 million medical imaging procedures every year.

Nickel vs Vanadium. Nickel vs Chromium. Nickel vs Manganese. Nickel vs Iron. Nickel vs Cobalt. Nickel vs Copper. Nickel vs Zinc.

Nickel vs Yttrium. Nickel vs Zirconium. Nickel vs Niobium. Nickel vs Molybdenum. Nickel vs Technetium. Nickel vs Ruthenium. Nickel vs Rhodium. Nickel vs Palladium.

Nickel vs Silver. Nickel vs Cadmium. Nickel vs Hafnium. Nickel vs Tantalum. Nickel vs Tungsten. Nickel vs Rhenium. Nickel vs Osmium. Nickel vs Iridium. Nickel vs Gold. Nickel vs Mercury. Nickel vs Rutherfordium. Nickel vs Dubnium. Nickel vs Seaborgium. Nickel vs Bohrium. Nickel vs Hassium. Nickel vs Meitnerium. Nickel vs Roentgenium. Nickel vs Copernicium. Atomic Number. Atomic Symbol. Atomic Weight. Group in Periodic Table. Lanthanum salts are used to remove excess phosphate from patients who suffer from chronic kidney dysfunction.

An alloy of lanthanum and nickel, when formed into a powder, is capable of absorbing times its own volume of hydrogen gas, and is being investigated as a possible storage medium in hydrogen-powered vehicles. The elements which follow lanthanum atomic numbers , are known as the lanthanides ; they are chemically similar to each other, and are often found together in various combination in ores. Actinium is a silvery-white, radioactive metal, which glows with blue light in the dark.

Its name comes from the Greek word aktinos , meaning "ray. It is produced in the decay sequences of radioactive uranium The most stable isotope of actinium is actinium, which has a half-life of The elements which follow actinium atomic numbers , are known as the actinides ; these elements are all radioactive, and most of them are synthetic.

Titanium is a hard, strong, silvery metal. The name is derived from the Titans of Greek mythology. It is found in the Earth's crust at a concentration of ppm, making it the 9th most abundant element. It is used in many applications where both strength and lightness are desirable, such as aircraft frames and engines, bicycles, and golf clubs. Titanium alloyed with aluminum and vanadium forms a metal with a higher strength-to-weight ratio than any other metal. Titanium is resistant to corrosion because its surface becomes coated with a thin, hard oxide film, which is very resistant to further chemical attack.

For this reason, titanium can be used in many medical devices. Titanium is used in the pins that hold broken bones together, and in cranial plates; it is a component in hip and knee replacements; and is used in pacemakers and surgical screws. Tissues bond to a titanium oxide layer on the surface of the metal which is formed when the metal is exposed to a plasma arc that exposes a fresh surface of titanium.

Titanium's unreactivity also makes it useful in offshore oil rigs, and parts of ships that are exposed to seawater. Titanium dioxide, TiO 2 , is commonly used in paints because of its intensely white color. Since titanium compounds are nontoxic, its use has largely replacing that of lead in paints. It is also used in sunscreens to scatter away ultraviolet light before it burns the skin.

Titanium tetrachloride, TiCl 4 , reacts with moisture in the air to produce titanium dioxide and hydrochloric acid, generating a dense white vapor; it is used in skywriting and smoke-screen devices. Zirconium is a tough, silvery, corrosion-resistant metal. Like titanium, zirconium metal resists corrosion because it easily forms a tough oxide coating. The name is derived from the Arabic word zargun , "gold colored. It is found in the Earth's crust at a concentration of ppm, making it the 18th most abundant element.

Powered zirconium metal is very flammable, and is used in some military incendiary devices such as Dragon's breath. Hafnium is a silvery, corrosion-resistant metal. Like titanium and zirconium, it forms a highly corrosion-resistant oxide coating.

The name comes from the Latin name for Copenhagen, Hafnia , the home of the Danish physicist Niels Bohr, who had suggested the arrangement of the outer electrons of the as-yet-unknown element. It is found in the Earth's crust at a concentration of 3. Hafnium is chemically very similar to zirconium see above , and is often present as an impurity in zirconium metals. Part of the reason for their chemical similarity is the fact that they are nearly the same size: zirconium has an atomic radius of pm, while hafnium has a radius of pm.

Hafnium is used in control rods for nuclear power plants because of its ability to absorb thermal neutrons. It is also used in alloys with other metals, and in some ceramics. Rutherfordium is a synthetic element, produced by the bombardment of californium with carbon, or curium with oxygen The longest-lived isotope, rutherfordium, has a half-life of 65 seconds, so it's rather doubtful that we'll be building anything out of rutherfordium.

The element is named after the physicist Ernest Rutherford. Vanadium is a soft, ductile, silvery-white metal. Like many of the transition metals, the metal is resistant to corrosion because it forms a strong oxide coating; however, it does oxidize more readily at high temperatures.

It is named for the Scandinavian goddess of beauty, Vanadis Freya in Norse mythology , because of the variety of colored salts it forms. It is found in the Earth's crust at a concentration of ppm, making it the 19th most abundant element.

It is usually obtained as a byproduct from the processing of other ores. One of the most common uses of vanadium metal is in alloys with iron, which is referred to as ferrovanadium , a strong, relatively lightweight, shock-resistant metal that is very resistant to corrosion. It is used in springs, high-speed tools, surgical instruments, gears and crankshafts, and armor plating. Traces of vanadium are also present in Damascus steel, which was prized for its hardness and ability to keep a sharp edge.

When alloyed with aluminum and titanium, it is used in jet engines and airframes. Vanadium is a component in some enzymes. In some species of nitrogen-fixing bacteria, the iron-sulfur protein nitrogenase that is responsible for the "fixing" of nitrogen its reduction from N 2 to NH 3 , incorporates a vanadium ion, instead of the more typical molybdenum ion.

Niobium is a shiny gray, soft, ductile metal. It is named after the Greek mythological character Niobe, daughter of Tantalus, because of the similarity of niobium to tantalum see below. It is found in the Earth's crust at a concentration of 20 ppm, making it the 33rd most abundant element.

Tantalum is frequently found in trace amounts in niobium ores. Niobium is used in some alloys of stainless steel, in arc welding rods, in metal alloys used in aircraft construction, in surgical implants, in jewelry, and in some types of glass. It is named after a character in Greek mythology, Tantalus father of Niobe. Tantalus killed his son, Pelops, and served him to the gods at a feast; the gods were not amused, and punished Tantalus in Hades by being made to stand in a pool of water surrounded by trees laden with fruit, but whenever he stooped to drink the water, it receded from him, and whenever he reached out for the fruit, the branches withdrew out of reach, leaving him forever thirsty and hungry.

This is also the derivation of the word "tantalize. It is found in the Earth's crust at a concentration of 2 ppm, making it the 51st most abundant element. Tantalum is used in some medical implants, such as pins in bone fractures, and in plating to replace damaged skull bone.

It is also used in surgical and dental tools, in electronic capacitors, and in some turbine blades and rocket nozzles. Tantalum carbide, TaC, is an extremely hard material, and is used in some cutting tools.

Dubnium is a synthetic element, produced by the bombardment of californium with nitrogen, or berkelium with oxygen The longest-lived isotope, dubnium, has a half-life of 34 seconds. The status of the earliest claims for the production of this element was also disputed see section on Rutherfordium , and for a time was known as both neilsbohrium Ns , the name proposed by the Russian group at Joint Institute for Nuclear Research, and as hahnium Ha , proposed by the team at the University of California, Berkeley.

Since their d orbitals are one electron away from being half-filled i. Chromium is a hard, steel-gray metal which can be polished to a high shine. Like many of the other transition metals, it forms a thin oxide coating chromic oxide, or chromium III oxide, Cr 2 O 3 which protects the metal below from further oxidation. The name is derived from the Greek word for color, chroma , because of the wide variety of colorful salts it produces. It is found in the Earth's crust at a concentration of ppm, making it the 21st most abundant element.

It is also used to electroplate metallic objects to give them a shiny, corrosion-resistant coating; this chrome plating is widely used in automobiles. Chromium III oxide, or chromic oxide, Cr 2 O 3 , is the ninth most abundant compound in the Earth's crust ppm by weight.

Chromite ore can withstand high temperatures, and is used to make some refractory bricks firebricks , which are used to line furnaces and kilns. Chromium compounds are also present in a number of dyes and paints, such as lead II chromate, PbCrO 4 , also known as chrome yellow, and chromium III oxide, Cr 2 O 3 , also known as chrome green or chromic oxide green.

Chromium salts are also used in some types of colored glass. Chromium salts are also responsible for the color of some gemstones. Rubies consist primarily of corundum aluminum oxide, Al 2 O 3 ; trace amounts of chromium give the stones a red color. The red light that is produced in ruby lasers is a result of excitation of the chromium atoms. Chromium also gives green and red colors to the gemstone alexandrite, a variety of the mineral chrysoberyl BeAl 2 O 4.

Chromium assists in the metabolism of glucose, but its exact function is not well understood. Chromium deficiency results in mild diabetes and reduced cholesterol levels; this condition is rare in developed countries.

There are a wide variety of foods which are plentiful in chromium, such as brewer's yeast, wine, corn oil, whole grains, egg yolks, calf's liver, peanuts, black pepper, and oysters; small amounts are also present in potatoes, beans, carrots, and apples. Chromium sulfate, Cr 2 SO 4 3 , is used in the tanning of leather. Chromium salts also serve as the basis of the "breathalyzer test" for the presence of alcohol.

If this color change occurs in the test solution, this indicates the presence of alcohol in the breath. It is named for the Greek word molybdos , meaning "lead," because of its similarity to lead. It is found in the Earth's crust at a concentration of 1.

It is found in the ores molybdenite [molybdenum sulfide, MoS 2 ], which is very similar to graphite in fact, both molybdenite and graphite have been used to make pencil "lead" , and wulfenite [lead molybdate, PbMoO 4 ].

Molybdenum is frequently used in alloys with other metals, such as high-temperature steels, and is used to manufacture engine parts, oil pipelines, aircraft parts, and armor plating.

Molybdenum atoms are present in the iron-sulfur protein nitrogenase, which is found in the rhizobia bacteria that are associated with the root nodules of leguminous plants such as beans, alfalfa, clover, etc. Mammals also use molybdenum-containing enzymes to convert nitrogenous wastes into uric acid. Very pure tungsten can be cut relatively easily, but it becomes much harder and more brittle when it is mixed with impurities.

Like many of the other transition metals, it is very resistant to corrosion. The name comes from the Swedish phrase tung sten , meaning "heavy stone. It is found in the Earth's crust at a concentration of 1 ppm, making it the 58th most abundant element.

Tungsten's high melting point and low vapor pressure allows it to be used as the filament in incandescent light bulbs. Tungsten's high density Tungsten carbide, WC, is one of the hardest substances known, and is used to make cutting tools, dental drills, rock drills for use in mining, and abrasives. Because of the existence of these elements were "nuclear secrets" during the Cold War they were discovered in the debris of nuclear tests , the existence of these elements was not publicly known until some time later.

Manganese is a hard, gray-white metal, which is very brittle, and fairly reactive. It is named for the Latin word for "magnet," magnes , since it can be made to be ferromagnetic with the right treatment.

It is found in the Earth's crust at a concentration of ppm, making it the 12th most abundant element. In addition, manganese-rich nodules are scattered across much of the ocean floor, but there is no practical way of obtaining them. Manganese is used in alloys with steel to improve strength and resistance to wear. Manganese steels are extremely strong, and are used in railroad tracks, earth-moving machinery, and other applications.