Rhenium – Periodic Table – Atomic Properties
The periodic table had two vacant slots below manganese and finding these missing elements, technetium and rhenium, proved difficult. Rhenium was the lower one and indeed it was the last stable, non-radioactive, naturally-occurring element to be discovered. Rhenium is an extremely rare element with atomic number 75 & represented by the symbol Re in the Periodic Table. It is used in petroleum-reforming & jet engines. Learn more about its applications, uses, properties and more @ BYJU'S.
Allotropes Some elements exist in several different structural forms, called allotropes. Each allotrope has different physical properties. For more information on the Visual Elements image see the Uses and properties section below.
Group A vertical column in the periodic table. Members of a group typically have similar properties and electron configurations in their outer shell. Period A horizontal row in the periodic table.
The atomic number of each element increases by one, reading from left to right. Block Elements are organised into blocks by the orbital type in which the outer electrons are found. These blocks are named for the characteristic spectra they produce: sharp sprincipal pdiffuse dand fundamental f. Atomic number The number of protons in an atom. Electron configuration The arrangements of electrons above the last closed shell noble gas.
Melting point The temperature at which the solid—liquid phase change occurs. Boiling point The temperature at which the liquid—gas phase change occurs. Sublimation The transition of a substance directly from the solid to the gas phase without passing through a liquid phase.
Relative atomic mass The mass of an atom relative to that of carbon This is approximately the sum of the number of protons and neutrons in the nucleus. Where more than one isotope exists, the value given is the abundance weighted average. Isotopes Atoms of the same element with different numbers of neutrons. CAS number The Chemical Abstracts Service registry number is a unique identifier of a particular chemical, designed to prevent confusion arising from different languages and naming systems.
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Where the element is most commonly found in nature, and how it is sourced commercially. Atomic radius, non-bonded Half of the distance between two unbonded atoms of the same element when the electrostatic forces are balanced.
These values were determined using several different methods. Covalent radius Half of the distance between two atoms within a single covalent bond. Values are given for typical oxidation number and coordination. Electron affinity The energy released when an electron is added to the neutral atom and a negative ion is formed.
Electronegativity Pauling scale The tendency of an atom to attract electrons towards itself, expressed on a relative scale. First ionisation energy The minimum what is the symbol for rhenium on the periodic table required to remove an electron from a neutral atom in its ground state. The oxidation state of an atom is a measure of the degree of oxidation of an atom. It is defined as being the charge that an atom would have if all bonds were ionic.
Uncombined elements have an oxidation state of 0. The sum of the oxidation states within a compound or ion must equal the overall charge. Data for this section been provided by the British Geological Survey.
An how to type in google search supply risk index from 1 very low risk to 10 very high risk.
This is calculated by combining the scores for crustal abundance, reserve distribution, production concentration, substitutability, recycling rate and political stability scores. The percentage of a commodity which is recycled. A higher recycling rate may reduce risk to supply.
The availability of suitable substitutes for a given commodity. The percentage of an element produced in the top producing country. The higher the value, the larger risk there is to supply.
The percentage of the world reserves located in the country with the largest reserves. A percentile rank for the political stability of the top producing country, derived from World Bank governance indicators. A percentile rank for the political stability of the country with the largest reserves, derived from World Bank governance indicators. Specific heat capacity is the amount of energy needed to change the temperature of a kilogram of a substance by 1 K.
A measure of the stiffness of a substance. It provides a measure of how difficult it is to extend a material, with a value given by the ratio of tensile strength to tensile strain.
A measure of how difficult it is to deform a material. It is given by the ratio of the shear stress to the shear strain. A measure of how difficult it is to compress a substance. It is given by the ratio of the pressure on a body to the fractional decrease in volume. A measure of the propensity of a substance to evaporate.
It is defined as the equilibrium pressure exerted by the gas produced above a substance in a closed system. This Site has been carefully prepared for your visit, and we ask you to honour and agree to the following terms and conditions when using this Site.
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Jump to main content. Periodic Table. Glossary Allotropes Some elements exist in several different structural forms, called allotropes. Glossary Group A vertical column in the periodic table.
Fact box. Glossary Image explanation Murray Robertson is the artist behind the images which how to start a campaign to raise money up Visual Elements. Appearance The description of the element in its natural form. Biological role The role of the element in humans, animals and plants. Natural abundance Where the element is most commonly found in nature, and how it is sourced commercially.
Uses and properties. Image explanation. The symbol is based on the coat of arms of Mainz, the capital of the German state of Rhineland-Palatinate. A metal with a very high melting point. Tungsten is the only metallic element with a higher melting point. Rhenium is used as an additive to tungsten- and molybdenum-based alloys to give useful properties.
These alloys are used for oven filaments and x-ray machines. It is also used as an electrical contact material as it resists wear and withstands arc corrosion. Rhenium catalysts are extremely resistant to poisoning deactivation and are used for the hydrogenation of fine chemicals. Some rhenium is used in nickel alloys to make single-crystal turbine blades. Biological role. Natural abundance. Rhenium is among the rarest metals on Earth.
It does not occur uncombined in nature or as a compound in a mineable mineral species. What matters the most in life production of rhenium is by extraction from the flue dusts of molybdenum smelters.
Help text not available for this section currently. Elements and Periodic Table History. The periodic table had two vacant slots below manganese and finding these missing elements, technetium and rhenium, proved difficult.
Rhenium was the lower one and indeed it was the last stable, non-radioactive, naturally-occurring element to be discovered. InMasataka Ogawa found it in the mineral thorianite from Sri Lanka. He realised from lines in its atomic spectrum that it contained an unknown element.
Chemistry in its element: rhenium
Dec 08, · Rhenium is a chemical element with atomic number 75 which means there are 75 protons in its nucleus. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The total electrical charge of the nucleus is therefore +Ze, where e (elementary charge) equals to 1, x coulombs. Use the periodic table to identify the chemical symbol or name for each element below. zirconium: rhenium:: As: K tin: yttrium:: Yb -
Rhenium is a chemical element with atomic number 75 which means there are 75 protons in its nucleus. Total number of protons in the nucleus is called the atomic number of the atom and is given the symbol Z. The total number of neutrons in the nucleus of an atom is called the neutron number of the atom and is given the symbol N. For stable elements, there is usually a variety of stable isotopes.
Isotopes are nuclides that have the same atomic number and are therefore the same element, but differ in the number of neutrons.
Mass numbers of typical isotopes of Rhenium are , The atomic mass is the mass of an atom. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. The atomic mass is carried by the atomic nucleus, which occupies only about 10 of the total volume of the atom or less, but it contains all the positive charge and at least Note that, each element may contain more isotopes , therefore this resulting atomic mass is calculated from naturally-occuring isotopes and their abundance.
The atomic radius of Rhenium atom is pm covalent radius. It must be noted, atoms lack a well-defined outer boundary. The atomic radius of a chemical element is a measure of the distance out to which the electron cloud extends from the nucleus.
However, this assumes the atom to exhibit a spherical shape, which is only obeyed for atoms in vacuum or free space. Therefore, there are various non-equivalent definitions of atomic radius. The number of electrons in an electrically-neutral atom is the same as the number of protons in the nucleus.
Therefore, the number of electrons in neutral atom of Rhenium is Each electron is influenced by the electric fields produced by the positive nuclear charge and the other Z — 1 negative electrons in the atom. Since the number of electrons and their arrangement are responsible for the chemical behavior of atoms, the atomic number identifies the various chemical elements. The configuration of these electrons follows from the principles of quantum mechanics.
In the periodic table, the elements are listed in order of increasing atomic number Z. Density is defined as the mass per unit volume. It is an intensive property , which is mathematically defined as mass divided by volume:. In chemistry and atomic physics, the electron affinity of an atom or molecule is defined as:.
Note that, ionization energies measure the tendency of a neutral atom to resist the loss of electrons. Electron affinities are more difficult to measure than ionization energies.
Ionization energy , also called ionization potential , is the energy necessary to remove an electron from the neutral atom. A Rhenium atom, for example, requires the following ionization energy to remove the outermost electron.
Main Menu. Atomic Masses of Elements. Atomic Radii of Elements. Densities of Elements. Electronegativity of Elements. Ionization Energy of Elements. Properties of other elements. Other properties of Rhenium.