Due to the quantum nature of electrons, the electrons are not point particles, they are smeared out over the whole atom. Neodymium is a soft silvery metal that tarnishes in air. Yttrium is a chemical element with atomic number 39 which means there are 39 protons and 39 electrons in the atomic structure. Germanium-76 is also radioactive, however, it is not highly radioactive as it has a half-life of 1.78 ×10 21 years. 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. Naturally occurring germanium is a mixture of five isotopes and they are found in the percentages shown: 70 Ge (21.2%), 72 Ge (27.7%), 73 Ge (7.7%), 74 Ge (35.9%) and 76 Ge (7.4%). 113Cd has specific absorption cross-section. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. The chemical symbol for Californium is Cf. The atomic mass is the mass of an atom. *Please select more than one item to compare The chemical symbol for Praseodymium is Pr. Argon is the third-most abundant gas in the Earth’s atmosphere, at 0.934% (9340 ppmv). Einsteinium is a chemical element with atomic number 99 which means there are 99 protons and 99 electrons in the atomic structure. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. Discoverer: Priestley, Joseph and Scheele, Carl Wilhelm, Discoverer: Ramsay, William and Travers, Morris, Discoverer: Ramsay, Sir William and Strutt, John (Lord Rayleigh), Discoverer: Del Rio, Andrés Manuel (1801) and Sefström, Nils Gabriel (1830), Discoverer: Lecoq de Boisbaudran, Paul-Émile, Discoverer: Ramsay, Sir William and Travers, Morris, Discoverer: Bunsen, Robert Wilhelm and Kirchhoff, Gustav Robert, Discoverer: Perrier, Carlo and Segrè, Emilio, Discoverer: Reich, Ferdinand and Richter, Hieronymus, Discoverer: Müller von Reichenstein, Franz Joseph, Discoverer: Ramsay, William and Travers, Morris William, Discoverer: Kirchhoff, Gustav and Bunsen, Robert. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. The chemical symbol for Zinc is Zn. The difference between the neutron number and the atomic number is known as the neutron excess: D = N – Z = A – 2Z. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure. Gadolinium belongs to a rare earth elements (it is one of a set of seventeen chemical elements in the periodic table). The chemical symbol for Indium is In. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. The chemical symbol for Rhenium is Re. Germanium as Semiconductor 12 grams polycrystalline germanium. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Today, germanium is used in making a number of electronic devices, including the transistor. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. It is a lanthanide, a rare earth element, originally found in the gadolinite mine in Ytterby in Sweden. In another way, Mass number=Protons +Neutrons. The chemical symbol for Cobalt is Co. Cobalt is found in the Earth’s crust only in chemically combined form, save for small deposits found in alloys of natural meteoric iron. The chemical symbol for Mendelevium is Md. Strontium is a chemical element with atomic number 38 which means there are 38 protons and 38 electrons in the atomic structure. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. The chemical symbol for Erbium is Er. Molybdenum a silvery metal with a gray cast, has the sixth-highest melting point of any element. Since nucleons (protons and neutrons) make up most of the mass of ordinary atoms, the density of normal matter tends to be limited by how closely we can pack these nucleons and depends on the internal atomic structure of a substance. It has an estimated density of 40.7 x 103 kg/m3. Under standard conditions, it is the lightest metal and the lightest solid element. The most probable fission fragment masses are around mass 95 (Krypton) and 137 (Barium). In nuclear reactors, promethium equilibrium exists in power operation. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. 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. It occurs on Earth as the decay product of various heavier elements. It is grayish-white, lustrous, hard and has similar chemical properties to tin and silicon. Atomic Number: 32 Symbol: Ge Atomic Weight: 72.61; Discovery: Clemens Winkler 1886 (Germany) Electron Configuration: [Ar] 4s 2 3d 10 4p 2; Word Origin: Latin Germania: Germany Properties: Germanium has a melting point of 937.4 C, boiling point of 2830 C, specific gravity of 5.323 (25 C), with valences of 2 and 4. The volume of an atom is about 15 orders of magnitude larger than the volume of a nucleus. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). Gold is a transition metal and a group 11 element. Atomic Number of Germanium. Main purpose of this project is to help the public to learn some interesting and important information about chemical elements and many common materials. Tellurium is a chemical element with atomic number 52 which means there are 52 protons and 52 electrons in the atomic structure. Calculates the number of atoms in a certain mass of a chemical element. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. The chemical symbol for Titanium is Ti. Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. It must be noted, atoms lack a well-defined outer boundary. It is the fourth most common element in the Earth’s crust. Today, germanium is used in making a number of electronic devices, including the transistor. The number is put out in scientific notation (ten to the power of), as numeral and in mole. Tellurium is chemically related to selenium and sulfur. Other elements in the same block: Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. Molecular Weight. Exact Mass: 69.9242497: Germanium-70 Metal Isotope Health & Safety Information. Germanium's abundance in the Earth's crust is approximately 1.6 ppm. Exact Mass: 69.9242497: Germanium-70 Metal Isotope Health & Safety Information. Anyone can be able to come here, learn the basics of materials science, material properties and to compare these properties. On the periodic table of the elements, atomic radius tends to increase when moving down columns, but decrease when moving across rows (left to right). Neptunium metal is silvery and tarnishes when exposed to air. The chemical symbol for Tin is Sn. Krypton is a chemical element with atomic number 36 which means there are 36 protons and 36 electrons in the atomic structure. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. It is the eponym of the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table, of which lanthanum is the first and the prototype. Cadmium is a chemical element with atomic number 48 which means there are 48 protons and 48 electrons in the atomic structure. We use cookies to ensure that we give you the best experience on our website. The chemical symbol for Nickel is Ni. Compare Products: Select up to 4 products. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images. Gadolinium is a chemical element with atomic number 64 which means there are 64 protons and 64 electrons in the atomic structure. Elemental sulfur is a bright yellow crystalline solid at room temperature. Discoverer: McMillan, Edwin M. and Abelson, Philip H. Discoverer: Glenn T. Seaborg, Joseph W. Kennedy, Edward M. McMillan, Arthur C. Wohl, Discoverer: Glenn T. Seaborg, Ralph A. James, Leon O. Morgan, Albert Ghiorso, Discoverer: Glenn T. Seaborg, Ralph A. James, Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Kenneth Street, Jr., Albert Ghiorso, Discoverer: Stanley G. Thompson, Glenn T. Seaborg, Bernard G. Harvey, Gregory R. Choppin, Albert Ghiorso, Discoverer: Albert Ghiorso, Glenn T. Seaborg, Torbørn Sikkeland, John R. Walton, Discoverer: Albert Ghiorso, Torbjørn Sikkeland, Almon E. Larsh, Robert M. Latimer, Copyright 2020 Periodic Table | All Rights Reserved |. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Germanium, isotope of mass 72. germanium-72. … The atomic number of an element never changes, meaning that the number of protons in the nucleus of every atom in an element is always the same. Name: Germanium Symbol: Ge Atomic Number: 32 Atomic Mass: 72.61 amu Melting Point: 937.4 °C (1210.55 K, 1719.3201 °F) Boiling Point: 2830.0 °C (3103.15 K, 5126.0 °F) Number of Protons/Electrons: 32 Number of Neutrons: 41 Classification: Metalloid Crystal Structure: Cubic Density @ 293 K: 5.323 g/cm 3 Color: grayish Atomic Structure Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. Neptunium is the first transuranic element. Nitrogen is a chemical element with atomic number 7 which means there are 7 protons and 7 electrons in the atomic structure. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. Argon is a chemical element with atomic number 18 which means there are 18 protons and 18 electrons in the atomic structure. The chemical symbol for Promethium is Pm. Germanium is a metalloid element - atomic number 32, atomic mass 72.59 - found in soil and plants. The chemical symbol for Thorium is Th. Carbon is one of the few elements known since antiquity. Being a typical member of the lanthanide series, europium usually assumes the oxidation state +3. The chemical symbol for Arsenic is As. Fermium is a member of the actinide series. For example, the neutron number of uranium-238 is 238-92=146. In nuclear industry gadolinium is commonly used as a neutron absorber due to very high neutron absorbtion cross-section of two isotopes 155Gd and 157Gd. 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). Mass numbers of typical isotopes of Germanium are 70; 72; 73; 74. There are also twenty-seven artificially prepared radioisotopes of germanium. Platinum is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Chlorine is a chemical element with atomic number 17 which means there are 17 protons and 17 electrons in the atomic structure. Holmium is a chemical element with atomic number 67 which means there are 67 protons and 67 electrons in the atomic structure. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. The cylinder inside is the ~33 g Germanium crystal. The chemical symbol for Lithium is Li. is a rare earth element with a metallic silver luster. The chemical symbol for Rubidium is Rb. The densest material found on earth is the metal osmium, but its density pales by comparison to the densities of exotic astronomical objects such as white dwarf stars and neutron stars. The chemical symbol for Niobium is Nb. The chemical symbol for Ytterbium is Yb. The chemical symbol for Berkelium is Bk. The chemical symbol for Gallium is Ga. Gallium has similarities to the other metals of the group, aluminium, indium, and thallium. The name samarium is after the mineral samarskite from which it was isolated. Element 32 of Periodic table is Germanium with atomic number 32, atomic weight 72.64. 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). Discovery and naming. The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Chhapa ke gallery All atoms have a mass number which is derived as follows. and Gay-Lussac, L.-J. Zirconium is mainly used as a refractory and opacifier, although small amounts are used as an alloying agent for its strong resistance to corrosion. Pure germanium is a semiconductor with an appearance similar to elemental silicon. Chromium is a chemical element with atomic number 24 which means there are 24 protons and 24 electrons in the atomic structure.  It is a synthetic element (first synthesised at Hasse in Germany) and radioactive. Uranium has the highest atomic weight of the primordially occurring elements. The atomic mass is the mass of an atom. The chemical symbol for Astatine is At. The atomic radii decrease across the periodic table because as the atomic number increases, the number of protons increases across the period, but the extra electrons are only added to the same quantum shell. Most widespread minerals containing Germanium; This list of minerals containing Germanium is built from the mindat.org locality database. N2 - No-phonon luminescence from excitons bound to shallow donors and acceptors in crystalline germanium is found to move to higher energy with increasing mass number A of the germanium at the rate dE/dA=0.35+or-0.02 meV. Radon occurs naturally as an intermediate step in the normal radioactive decay chains through which thorium and uranium slowly decay into lead. Germanium Basic Facts . Are all chemical elements very different from each other, he asked. Zirconium is widely used as a cladding for nuclear reactor fuels. Particle locations in quantum mechanics are not at an exact position, they are described by a probability density function. The chemical symbol for Magnesium is Mg. Magnesium is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column (group 2, or alkaline earth metals) of the periodic table: all group 2 elements have the same electron configuration in the outer electron shell and a similar crystal structure. Because of its high chemical reactivity, barium is never found in nature as a free element. Praseodymium is a chemical element with atomic number 59 which means there are 59 protons and 59 electrons in the atomic structure. 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. Atomic Mass Number – Does it conserve in a nuclear reaction? Palladium, platinum, rhodium, ruthenium, iridium and osmium form a group of elements referred to as the platinum group metals (PGMs). The chemical symbol for Thulium is Tm. 1) You may use almost everything for non-commercial and educational use. Element Germanium (Ge), Group 14, Atomic Number 32, p-block, Mass 72.630. It has an estimated density of 40.7 x 103 kg/m3. The chemical symbol for Lead is Pb. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry.  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. Germanium is a lustrous, hard, grayish-white metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Americium is a chemical element with atomic number 95 which means there are 95 protons and 95 electrons in the atomic structure. The chemical symbol for Strontium is Sr. Strontium is an alkaline earth metal, strontium is a soft silver-white yellowish metallic element that is highly reactive chemically. SO; in your question we have: mass no. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. Radon is a radioactive, colorless, odorless, tasteless noble gas. The difference is a measure of the nuclear binding energy which holds the nucleus together. The chemical symbol for Mercury is Hg. There are five naturally occurring isotopes of germanium: germanium-70, germanium-72, germanium-73, germanium-74, and germanium-76. Consequently, the smallest atom is helium with a radius of 32 pm, while one of the largest is caesium at 225 pm. Bromine is a chemical element with atomic number 35 which means there are 35 protons and 35 electrons in the atomic structure. All of its isotopes are radioactive. 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. We realize that the basics in the materials science can help people to understand many common problems. Technetium is a chemical element with atomic number 43 which means there are 43 protons and 43 electrons in the atomic structure. Germanium, 32 Ge Germanium; Pronunciation / dʒ ər ˈ m eɪ n i ə m / (jər-MAY-nee-əm) Appearance: grayish-white: Standard atomic weight A r, std (Ge): 72.630(8) Mass number: Ge: Germanium in … The chemical symbol for Cerium is Ce. Titanium is a chemical element with atomic number 22 which means there are 22 protons and 22 electrons in the atomic structure. The first alloy used on a large scale was bronze, made of tin and copper, from as early as 3000 BC. 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. The chemical symbol for Zirconium is Zr. Lead has the highest atomic number of any stable element and concludes three major decay chains of heavier elements. If you want to get in touch with us, please do not hesitate to contact us via e-mail: Copyright 2020 Periodic Table | All Rights Reserved |. -Oxid germanium ( IV ) -oxid germanium ( Ge ), group 14, atomic number 93 means! 21 which means there are 32 protons and 11 electrons in the structure! Concludes three major decay chains of heavier elements Germanium-70, germanium-72, germanium-73, germanium-74, and a. Is often inconvenient polonium is a rare Earth elements of particles, the electron cloud contracts and the metal! Solid metal when artificially isolated, natural erbium is always found in minerals... Gray metalloid, germanium is 72.64 u 49 protons and 32 electrons in the atomic.... Molecules with a slight golden tinge hard-brittle, grayish-white metalloid in the atomic,. Fraction ( let say 0.05 % ) atoms are so small that the space and in,. Earth ’ s crust is similar to its heavier homologues strontium and barium 1310-53-8 EC... 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