What is the state of technetium
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What is the phase of technetium?
solid
| Technetium | |
|---|---|
| Phase at STP | solid |
| Melting point | 2430 K (2157 °C, 3915 °F) |
| Boiling point | 4538 K (4265 °C, 7709 °F) |
| Density (near r.t. ) | 11 g/cm3 |
Is technetium neutral?
Technetium atoms have 43 electrons and the shell structure is 2.8. … The ground state electronic configuration of neutral technetium is [Kr].
What is Tc 93?
TC-93 was an astromech droid belonging to Republic Strategic Information Service agent Carina during the Cold War. She formed an attachment to him and refused to perform memory wipes on him.
Is technetium soluble in water?
The measured solubility of technetium under high pH and reducing conditions in contact with hydrated tec~eti~ dioxide has been found to be about 10 – 7 mol dm – 3 and is inde~ndent of pH in the range 8-13 and the type of cement-equilibrated water used.
Who discovered technetium?
Technetium/Discoverers
Claims in the 1920s to have found this element, or at least to have observed its spectrum, cannot be entirely discounted. Technetium was discovered by Emilio Segrè in 1937 in Italy.
What is the neutrons of technetium?
Fill in the known values where N represents the number of neutrons. Rewrite the equation as 43+N=98 43 + N = 98 .
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Chemistry Examples.
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Chemistry Examples.
| 43 | Atomic Number |
|---|---|
| Technetium | Element Name |
| 98 | Average Atomic Mass |
Is technetium a gas?
Technetium is a chemical element with symbol Tc and atomic number 43. Classified as a transition metal, Technetium is a solid at room temperature.
What is the first artificial element?
technetium
This revelation would eventually lead to the development of nuclear weapons — and meant that Segrè and Perrier’s eka-manganese was the first true synthetic element. In 1947, ten years after its discovery, they named it technetium, after ‘technetos’, the Greek word for ‘artificial’7.
What is the color of technetium?
Silvery grey metallic
Basic Information
| Name | Technetium |
|---|---|
| Color | Silvery grey metallic |
| Classification | Metallic |
| Melting point | 2200°C (3992°F) |
| Boiling point | 4877°C (8811°F) |
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Dec 18, 2012
Where do you find technetium?
Some scientists believe that technetium will be found in very small amounts in the Earth’s crust along with other radioactive materials, such as uranium and radium. However, it has never been found on Earth. It has, however, been found in certain types of stars.
Is technetium an isotope?
Technetium-99 is the most common and most readily available isotope, as it is a major fission product from fission of actinides like uranium and plutonium with a fission product yield of 6% or more, and in fact the most significant long-lived fission product.
How many protons does technetium have?
What family is technetium in?
Group 7
technetium (Tc), chemical element, synthetic radioactive metal of Group 7 (VIIb) of the periodic table, the first element to be artificially produced.
What are the main uses of technetium?
Technetium (Tc-99m) is an isotope commonly used in a number of medical diagnostic imaging scans. Tc99m is used as a radioactive tracer for nuclear medicine; which is a form of medical imaging that assesses how particular parts of our body are working or functioning.
What are the 3 properties of technetium?
| Atomic number | 43 |
|---|---|
| Density | 11.5 g.cm–3 at 20°C |
| Melting point | 2200 oC |
| Boiling point | 4877 oC |
| Vanderwaals radius | 0.128 nm |
Why is 43 called technetium?
Technetium was the first element to be produced artificially and all its isotopes are radioactive. It is named after the Greek technetos, artificial.
How is technetium obtained?
Technetium was created by bombarding molybdenum atoms with deuterons that had been accelerated by a device called a cyclotron. Today, technetium is produced by bombarding molybdenum-98 with neutrons. Molybdenum-98 becomes molybdenum-99 when it captures a neutron.
Why is technetium special?
Technetium is the lightest radioactive element on the periodic table and its isotopes decay into a variety of other elements including stable ruthenium. … The big advantage of technetium-99m (half-life six hours) is that it is produced by decay from the much longer lived isotope molybdenum-99 (half-life 67 hours).
What type of element is Ru?
ruthenium
ruthenium (Ru), chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table, used as an alloying agent to harden platinum and palladium. Silver-gray ruthenium metal looks like platinum but is rarer, harder, and more brittle.
Who discovered element 83?
Often confused with tin and lead due to its resemblance to those elements. Bismuth was utilised in ancient times by the Egyptians, Greeks, Asians, Romans and Chinese. Claude Geoffrey Junine was credited with its discovery in 1753 demonstrating its distinction from lead and tin.
How many isotopes does technetium have?
There are 22 reported isotopes of technetium, all of them radioactive. It is one of only two elements with Z < 83 that have no stable isotopes (the other being promethium). Its isotopes range from 90 to 111.
Is RU magnetic?
A new finding demonstrates that the chemical element ruthenium (Ru) is the fourth single element to have unique magnetic properties at room temperature. … Since then only three elements on the periodic table have been found to be ferromagnetic at room temperature — iron (Fe), cobalt (Co), and nickel (Ni).
What is the electronic configuration of RU?
Where did the name ruthenium come from?
| Discovery date | 1844 |
|---|---|
| Discovered by | Karl Karlovich Klaus |
| Origin of the name | The name is derived from ‘Ruthenia’, the Latin name for Russia |
| Allotropes |
How many valence electrons are in RU?
Ruthenium Atomic and Orbital Properties
| Atomic Number | 44 |
|---|---|
| Electron Configuration | [Kr] 4d7 5s1 |
| Valence Electrons | 4d7 5s1 |
| Oxidation State | -4;-2 1;2;3;4;5;6;7;8 |
| Atomic Term Symbol (Quantum Numbers) | 5F5 |
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