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 is given by the ratio of the pressure on a body to the fractional decrease in volume. Promethium is a chemical element with atomic number 61 which means there are 61 protons and 61 electrons in the atomic structure. He heated erbium nitrate until it decomposed and then extracted the residue with water and obtained two oxides: a red one which was erbium oxide, and a white one which he knew must be a new element, and this he named ytterbium. Only in 1953 was a pure sample obtained. This chemically determined value was reconfirmed by the Commission in 1961. Caesium is a soft, silvery-gold alkali metal with a melting point of 28.5 °C, which makes it one of only five elemental metals that are liquid at or near room temperature. Earlier, in 1843, erbium and terbium were extracted from yttria and then ytterbium was separated from erbium. All isotopes of radium are highly radioactive, with the most stable isotope being radium-226. Neon is a chemical element with atomic number 10 which means there are 10 protons and 10 electrons in the atomic structure. Chemically, indium is similar to gallium and thallium. The chemical symbol for Iron is Fe. The chemical symbol for Lutetium is Lu. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. Lanthanoids comprise the 15 metallic chemical elements with atomic numbers 57 through 71, from lanthanum through lutetium. Ytterbium, a silvery white metal is electropositive which reacts with water to form ytterbium hydroxide. The role of the element in humans, animals and plants. In light of new mass-spectrometric determinations, the Commission recommended A r (Yb Iridium is a very hard, brittle, silvery-white transition metal of the platinum group, iridium is generally credited with being the second densest element (after osmium). The chemical symbol for Radium is Ra. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. 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. The chemical symbol for Neptunium is Np. The higher the value, the larger risk there is to supply. Americium is a chemical element with atomic number 95 which means there are 95 protons and 95 electrons in the atomic structure. In 2015, the standard atomic weight of ytterbium was revised to 173.045(10). The metal is found in the Earth’s crust in the pure, free elemental form (“native silver”), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. The chemical symbol for Niobium is Nb. Where more than one isotope exists, the value given is the abundance weighted average. Main purpose of this project is to help the public learn some interesting and important information about the peaceful uses of nuclear energy. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. The chemical symbol for Palladium is Pd. The name samarium is after the mineral samarskite from which it was isolated. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Political stability of top reserve holder. Because of its closed-shell electron configuration, its density and melting and boiling points differ significantly from those of most other lanthanides. The Cookies Statement is part of our Privacy Policy. Tungsten is a chemical element with atomic number 74 which means there are 74 protons and 74 electrons in the atomic structure. It is even less abundant than the so-called rare earths. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. Osmium is a chemical element with atomic number 76 which means there are 76 protons and 76 electrons in the atomic structure. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. The chemical symbol for Iodine is I. Iodine is the heaviest of the stable halogens, it exists as a lustrous, purple-black metallic solid at standard conditions that sublimes readily to form a violet gas. An integrated supply risk index from 1 (very low risk) to 10 (very high risk). Elements are organised into blocks by the orbital type in which the outer electrons are found. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. However, from that time, Ar(Yb) was no longer based In light of new mass-spectrometric determinations, the Commission recommended Ar(Yb) = 173.054(5) in 2007. The chemical symbol for Helium is He. The higher the value, the larger risk there is to supply. Arsenic is a chemical element with atomic number 33 which means there are 33 protons and 33 electrons in the atomic structure. The ordering of the electrons in the ground state of multielectron atoms, starts with the lowest energy state (ground state) and moves progressively from there up the energy scale until each of the atom’s electrons has been assigned a unique set of quantum numbers. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. The chemical symbol for Bromine is Br. Chlorine is a yellow-green gas at room temperature. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure.    Other Metals Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. A measure of how difficult it is to compress a substance. Element Ytterbium (Yb), Group 19, Atomic Number 70, f-block, Mass 173.045. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. The chemical symbol for Hafnium is Hf. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. A horizontal row in the periodic table. Now next week, we've got an explosive element and I'll give one you guess as to who it's named after. Even though the element is fairly stable, it should be kept in closed containers to protect it from air and moisture. Zirconium is a lustrous, grey-white, strong transition metal that resembles hafnium and, to a lesser extent, titanium. Major advantage of lead shield is in its compactness due to its higher density. We hope that you enjoy your visit to this Site. In the research community, luminescent ytterbium compounds that give out light in the near infra red (around 980 nm) are of current interest and are being developed for use as alternative luminescent probes.

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