Reference E95. The atomic mass is carried by the atomic nucleus, which occupies only about 10-12 of the total volume of the atom or less, but it contains all the positive charge and at least 99.95% of the total mass of the atom. Arsenic is a metalloid. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. 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). Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Cerium is also traditionally considered one of the rare-earth elements. The chemical symbol for Caesium is Cs. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. Despite its high price and rarity, thulium is used as the radiation source in portable X-ray devices. The chemical symbol for Curium is Cm. Germanium under this condition is known as α-germanium… While in crystal form, germanium has a displacement threshold energy of $${\displaystyle 19.7_{-0.5}^{+0.6}~{\text{eV}}}$$. All of the alkali metals have a single valence electron in the outer electron shell, which is easily removed to create an ion with a positive charge – a cation, which combines with anions to form salts. Uranium is weakly radioactive because all isotopes of uranium are unstable, with half-lives varying between 159,200 years and 4.5 billion years. Germanium is a chemical element with Ge as its symbol. Germanium In 1961, the Commission recommended Ar (Ge) = 72.59, based on chemical ratio determinations. Germanium is a lustrous, hard, greyish- white a metalloid. The bulk properties of astatine are not known with any certainty. 1) You may use almost everything for non-commercial and educational use.    Electron Configuration The chemical symbol for Tantalum is Ta. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. This form constitutes an allotrope known as α-germanium, which has a metallic luster and a diamond cubic crystal structure, the same as diamond. Symbol: Ge. The chemical symbol for Radium is Ra. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). Uranium has the highest atomic weight of the primordially occurring elements. © 2019 periodic-table.org / see also Isotopes of germanium Germanium (Ge) Standard atomic mass: 72.64(1) u Additional recommended knowledge Daily Visual Balance Check Don't let static charges Antimony compounds have been known since ancient times and were powdered for use as medicine and cosmetics, often known by the Arabic name, kohl. Scandium is a silvery-white metallic d-block element, it has historically been sometimes classified as a rare-earth element, together with yttrium and the lanthanides. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. The chemical symbol for Niobium is Nb. The chemical symbol for Zinc is Zn. A colorless, odorless, tasteless noble gas, krypton occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. Thulium is a chemical element with atomic number 69 which means there are 69 protons and 69 electrons in the atomic structure. chemical properties, health and environmental effects of germanium. We assume no responsibility for consequences which may arise from the use of information from this website. Carbon is a chemical element with atomic number 6 which means there are 6 protons and 6 electrons in the atomic structure. In nuclear industry boron is commonly used as a neutron absorber due to the high neutron cross-section of isotope 10B. The name xenon for this gas comes from the Greek word ξένον [xenon], neuter singular form of ξένος [xenos], meaning ‘foreign(er)’, ‘strange(r)’, or ‘guest’. Chlorine is a yellow-green gas at room temperature. At that time it was also noted that the available mass-spectrometric measurements averaged to Ar (Ge) = 72.628, which conflicted with the accepted chemical values. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. 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. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. The standard SI unit is kilograms per cubic meter (kg/m3). Since the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance, it is obvious, the density of a substance strongly depends on its atomic mass and also on the atomic number density (N; atoms/cm3). The chemical symbol for Manganese is Mn. The atomic mass is the mass of an atom. The chemical symbol for Thulium is Tm. Astatine is the rarest naturally occurring element on the Earth’s crust. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. Like silicon, germanium naturally reacts and forms complexes with oxygen in nature. The chemical symbol for Mercury is Hg. According to the Einstein relationship (E=mc2), this binding energy is proportional to this mass difference and it is known as the mass defect. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). Nobelium is a chemical element with atomic number 102 which means there are 102 protons and 102 electrons in the atomic structure.  Links, Show Table With: There are five naturally occurring isotopes of germanium: germanium-70, germanium-72, germanium-73, germanium-74, and germanium-76. The chemical symbol for Copper is Cu. Lawrencium is the final member of the actinide series. Fermium is a member of the actinide series. The presence of different isotopes *The atomic mass is an average that represents the abundance of each isotope. Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 electrons in the atomic structure. Germanium is brittle and silvery-white under standard conditions. Number of natural isotopes (atoms of the same ele… and Gay-Lussac, L.-J. Silicon is a chemical element with atomic number 14 which means there are 14 protons and 14 electrons in the atomic structure. Caesium has physical and chemical properties similar to those of rubidium and potassium. Abundance. Ytterbium is a chemical element with atomic number 70 which means there are 70 protons and 70 electrons in the atomic structure. Germanium, isotope of mass 74. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3. The Atomic Mass Of Germanium Is 72.6 U And The Germanium Lattice Constant A Is 5.65 Å. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. Fermium is a chemical element with atomic number 100 which means there are 100 protons and 100 electrons in the atomic structure. Mass was no longer considered unchangeable in the closed system. The chemical symbol for Bromine is Br. The chemical symbol for Argon is Ar.    Number of Neutrons Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. The chemical symbol for Scandium is Sc. The chemical symbol for Iron is Fe. In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. Atomic Mass Average: 72.61; Boiling Point: 3103K 2830°C 5126°F; Coefficient of lineal thermal expansion/K-1: 5.57E-6; Conductivity Electrical: 1.45E-8 10 6 /cm Ω Thermal: 0.599 W/cmk; Density: 5.323g/cc @ 300K; Description: … For other isotopes, the isotopic mass usually differs and is usually within 0.1 u of the mass number. The chemical symbol for Tellurium is Te. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Sodium is an alkali metal, being in group 1 of the periodic table, because it has a single electron in its outer shell that it readily donates, creating a positively charged atom—the Na+ cation. Bismuth is a brittle metal with a silvery white color when freshly produced, but surface oxidation can give it a pink tinge. The chemical symbol for Fermium is Fm. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. 74Ge = 36.52%. Germanium is a chemical element with Atomic Number 32 and symbol Ge. The chemical symbol for Europium is Eu. (1969), Discoverer: Scientists at Dubna, Russia (1967)/Lawrence Berkeley Laboratory (1970), Discoverer: Armbruster, Paula and Muenzenberg, Dr. Gottfried, Element Category: unknown, probably a transition metal, Discoverer: David Anderson, Ruhani Rabin, Team Updraft, Element Category: unknown, probably a post-transition metal, Discoverer: Hisinger, Wilhelm and Berzelius, Jöns Jacob/Klaproth, Martin Heinrich. Atomic Number 14 Atomic Mass g/mol Periodic Table Group 32 Row / Period 4 Element Category Semimetal Chhapa Germanium ke electron shell. Carbon is the 15th most abundant element in the Earth’s crust, and the fourth most abundant element in the universe by mass after hydrogen, helium, and oxygen. Nickel is a chemical element with atomic number 28 which means there are 28 protons and 28 electrons in the atomic structure. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties. Germanium was first located in a rare mineral called argyrodite. Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure. Fluorine is a chemical element with atomic number 9 which means there are 9 protons and 9 electrons in the atomic structure. We can determine the neutron number of certain isotope. 72Ge = 27.45% 73Ge = 7.76%. The chemical symbol for Fluorine is F. Fluorine is the lightest halogen and exists as a highly toxic pale yellow diatomic gas at standard conditions. It belongs to group 14 of the periodic table and its atomic number is 32. Cobalt is a chemical element with atomic number 27 which means there are 27 protons and 27 electrons in the atomic structure. Bismuth is a chemical element with atomic number 83 which means there are 83 protons and 83 electrons in the atomic structure. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. The name samarium is after the mineral samarskite from which it was isolated. Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. Atomic Mass of Germanium Atomic mass of Germanium is 72.64 u. The chemical symbol for Uranium is U. Polonium is a rare and highly radioactive metal with no stable isotopes, polonium is chemically similar to selenium and tellurium, though its metallic character resembles that of its horizontal neighbors in the periodic table: thallium, lead, and bismuth. Stable 74 Ge is the most common isotope, having a natural abundance of approximately 36%. See also: Atomic Mass Number – Does it conserve in a nuclear reaction? The chemical symbol for Krypton is Kr. Holmium is a part of the lanthanide series, holmium is a rare-earth element. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion.    Other Metals These condensers use tubes that are usually made of stainless steel, copper alloys, or titanium depending on several selection criteria (such as thermal conductivity or corrosion resistance). The chemical symbol for Rhodium is Rh.  The density of Hassium results from its high atomic weight and from the significant decrease in ionic radii of the elements in the lanthanide series, known as lanthanide and actinide contraction. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Germanium is not present in its pure elemental form and mostly extracted from its zinc ore (sphalerite) and from ores of copper, silver and lead. Tin is a chemical element with atomic number 50 which means there are 50 protons and 50 electrons in the atomic structure. Radon is a radioactive, colorless, odorless, tasteless noble gas. Typical densities of various substances are at atmospheric pressure. These have similar chemical properties, but palladium has the lowest melting point and is the least dense of them. The chemical symbol for Iridium is Ir. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. The chemical symbol for Californium is Cf. All of its isotopes are radioactive. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. Therefore, we cannot determine the neutron number of uranium, for example. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Atomic number of silicon is 32 and is indicated by the symbol Ge. 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. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. Use of this web site is restricted by this site's license Tellurium is chemically related to selenium and sulfur. The chemical symbol for Polonium is Po. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Element Germanium (Ge), Group 14, Atomic Number 32, p-block, Mass 72.630. Europium is one of the least abundant elements in the universe. The chemical symbol for Selenium is Se. The chemical symbol for Tin is Sn. The chemical symbol for Oxygen is O. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. Atomic Weight = 72.61. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. One atomic mass unit is equal to 1.66 x 10-24 grams. Neptunium metal is silvery and tarnishes when exposed to air. E. Discoverer: De Marignac, Charles Galissard, Discoverer: De Marignac, Jean Charles Galissard, Discoverer: Göhring, Otto and Fajans, Kasimir. It is obtained chiefly from the mineral cassiterite, which contains tin dioxide. Nickel belongs to the transition metals and is hard and ductile. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its ores are rare. The chemical symbol for Beryllium is Be. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. It is fairly soft and slowly tarnishes in air. A major development was the discovery that steel could be made highly resistant to corrosion and discoloration by adding metallic chromium to form stainless steel. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. Under standard conditions, germanium is a brittle, silvery-white, semi-metallic element. Germanium. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. Naturally occurring potassium is composed of three isotopes, of which 40K is radioactive.    Atomic Number For 12C the atomic mass is exactly 12u, since the atomic mass unit is defined from it. Nearly all technetium is produced synthetically, and only minute amounts are found in the Earth’s crust. Its monatomic form (H) is the most abundant chemical substance in the Universe, constituting roughly 75% of all baryonic mass. Isotopes are two or more forms of an element. Because of its high chemical reactivity, barium is never found in nature as a free element. The chemical symbol for Zirconium is Zr. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. Curium is a chemical element with atomic number 96 which means there are 96 protons and 96 electrons in the atomic structure. Mass. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 electrons in the atomic structure. The chemical symbol for Cadmium is Cd. We use cookies to ensure that we give you the best experience on our website. Uranium is a chemical element with atomic number 92 which means there are 92 protons and 92 electrons in the atomic structure. Like all elements with atomic number over 100, nobelium can only be produced in particle accelerators by bombarding lighter elements with charged particles. It's an element that was predicted by Mendeleev in 1871. Germanium is an abundant element and is ranked as the 15th most abundant element in the earth’s crust. Thulium is the thirteenth and third-last element in the lanthanide series. The chemical symbol for Antimony is Sb. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. All Rights Reserved. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. The chemical symbol for Ytterbium is Yb. Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. For example, 63Cu (29 protons and 34 neutrons) has a mass number of 63 and an isotopic mass in its nuclear ground state is 62.91367 u. 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