The chemical symbol for Xenon is Xe. Explanation:Atomic number represents the total number of protons present in an atom. Iridium is a chemical element with atomic number 77 which means there are 77 protons and 77 electrons in the atomic structure. The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal. On the atomic scale, physicists have found that quantum mechanics describes things very well on that scale. Iron is a metal in the first transition series. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 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 chemical symbol for Zinc is Zn. It is the heaviest essential mineral nutrient. Americium is a transuranic member of the actinide series, in the periodic table located under the lanthanide element europium, and thus by analogy was named after the Americas. The chemical symbol for Mendelevium is Md. Therefore the space in an atom (between electrons and an atomic nucleus) is not empty, but it is filled by a probability density function of electrons (usually known as  “electron cloud“). Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. Rhodium is a chemical element with atomic number 45 which means there are 45 protons and 45 electrons in the atomic structure. The chemical symbol for Tantalum is Ta. Therefore, the effective nuclear charge towards the outermost electrons increases, drawing the outermost electrons closer. The chemical symbol for Rhodium is Rh. Manganese is a metal with important industrial metal alloy uses, particularly in stainless steels. It was first discovered and isolated by Scottish physician Daniel Rutherford in 1772. The most commonly used spontaneous fission neutron source is the radioactive isotope californium-252. In nuclear industry, especially artificial xenon 135 has a tremendous impact on the operation of a nuclear reactor. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Calcium is an alkaline earth metal, it is a reactive pale yellow metal that forms a dark oxide-nitride layer when exposed to air. It is an extremely reactive element and a strong oxidising agent: among the elements, it has the highest electron affinity and the third-highest electronegativity, behind only oxygen and fluorine. The chemical symbol for Silicon is Si. Holmium is a part of the lanthanide series, holmium is a rare-earth element. Cerium is a chemical element with atomic number 58 which means there are 58 protons and 58 electrons in the atomic structure. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Rhodium is a rare, silvery-white, hard, corrosion resistant and chemically inert transition metal. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Discoverer: Corson, Dale R. and Mackenzie, K. R. The actinide or actinoid series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium through lawrencium. The chemical symbol for Bismuth is Bi. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. The chemical symbol for Americium is Am. Hence, we can conclude that the ion has 7 protons and 10 electrons. Its properties are thus intermediate between those of chlorine and iodine. The name samarium is after the mineral samarskite from which it was isolated. Silver is a soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. 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 Berkelium is Bk. If you have more homework to do you can use the search bar to find the answer to other homework: 150 have done it today and 86 in the last hour. Tellurium is far more common in the universe as a whole than on Earth. N all by itself has 7 electrons. The Van der Waals radius, rw, of an atom is the radius of an imaginary hard sphere representing the distance of closest approach for another atom. The chemical symbol for Aluminum is Al. 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). Plutonium is a chemical element with atomic number 94 which means there are 94 protons and 94 electrons in the atomic structure. The chemical symbol for Neon is Ne. By mass, aluminium makes up about 8% of the Earth’s crust; it is the third most abundant element after oxygen and silicon and the most abundant metal in the crust, though it is less common in the mantle below. Tungsten is an intrinsically brittle and hard material, making it difficult to work. Arsenic occurs in many minerals, usually in combination with sulfur and metals, but also as a pure elemental crystal. The chemical symbol for Rubidium is Rb. The periodic table has several categorizations for its elements, and one of these is the atomic number. Ruthenium is a rare transition metal belonging to the platinum group of the periodic table. This site uses Akismet to reduce spam. Platinum is used in catalytic converters, laboratory equipment, electrical contacts and electrodes, platinum resistance thermometers, dentistry equipment, and jewelry. isotope of nitrogen has a mass number of 13 (nitrogen-13). The mass number (15) is the sum of the protons and neutrons. . Students Also Read An Introduction to Atomic Number, Isotopes and Isobars Europium is one of the least abundant elements in the universe. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. The chemical symbol for Germanium is Ge. 1) You may use almost everything for non-commercial and educational use. 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. Commercially, thallium is produced as a byproduct from refining of heavy metal sulfide ores. 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. The chemical symbol for Osmium is Os. We use cookies to ensure that we give you the best experience on our website. Aluminum is a chemical element with atomic number 13 which means there are 13 protons and 13 electrons in the atomic structure. 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’. Discoverer: Scientists at Dubna, Russia (1964)/Albert Ghiorso et. Actinium gave the name to the actinide series, a group of 15 similar elements between actinium and lawrencium in the periodic table. Natural boron consists primarily of two stable isotopes, 11B (80.1%) and 10B (19.9%). (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. The chemical symbol for Einsteinium is Es. The chemical symbol for Lithium is Li. The greater number of double bonds. Its abundance in rocky planets like Earth is due to its abundant production by fusion in high-mass stars. Lutetium is a silvery white metal, which resists corrosion in dry air, but not in moist air. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 electrons in the atomic structure. Oxygen 15 and nitrogen 15 are the same elements because they have the same atomic mass. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. The Standard English unit is pounds mass per cubic foot (lbm/ft3). If you continue to use this site we will assume that you are happy with it. 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. In nuclear industry, especially natural and artificial samarium 149 has an important impact on the operation of a nuclear reactor. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Nitrogen is the chemical element with the symbol N and atomic number 7. The bulk properties of astatine are not known with any certainty. Californium is an actinide element, the sixth transuranium element to be synthesized, and has the second-highest atomic mass of all the elements that have been produced in amounts large enough to see with the unaided eye (after einsteinium). Berkelium is a member of the actinide and transuranium element series. Where more than one isotope exists, the value given is the abundance weighted average. The chemical symbol for Sodium is Na. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. Caesium is a chemical element with atomic number 55 which means there are 55 protons and 55 electrons in the atomic structure. Xenon is a colorless, dense, odorless noble gas found in the Earth’s atmosphere in trace amounts. The commercial use of beryllium requires the use of appropriate dust control equipment and industrial controls at all times because of the toxicity of inhaled beryllium-containing dusts that can cause a chronic life-threatening allergic disease in some people called berylliosis. Antimony is a lustrous gray metalloid, it is found in nature mainly as the sulfide mineral stibnite. The atomic number describes the amount of protons in a molecule, meaning it should have 7 protons. 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 Rhenium is Re. For each isotope, give the following information: (a) the number of protons; (b) the number of neutrons; The chemical symbol for Lawrencium is Lr. Determine the number of electrons. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. The chemical symbol for Neodymium is Nd. The chemical symbol for Scandium is Sc. List The Number Of Protons Neutrons And Electrons In 13/6 C, A Nitride Ion Has 7 Protons, 8 Neutrons, And 10…, How Many Protons, Neutrons, And Electrons Are There…. The chemical symbol for Silver is Ag. Indium is a post-transition metal that makes up 0.21 parts per million of the Earth’s crust. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. You can strip off the electrons one at a time. The chemical symbol for Actinium is Ac. Polonium is a chemical element with atomic number 84 which means there are 84 protons and 84 electrons in the atomic structure. In the periodic table, potassium is one of the alkali metals. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Liquid nitrogen (made by distilling liquid air) boils at 77.4 kelvins (−195.8°C) and is used as a coolant. The most stable known isotope, 269Hs, has a half-life of approximately 9.7 seconds. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. The chemical symbol for Nitrogen is N . It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities. 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. As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. The chemical symbol for Ytterbium is Yb. Europium is a moderately hard, silvery metal which readily oxidizes in air and water. Barium is the fifth element in group 2 and is a soft, silvery alkaline earth metal. The chemical symbol for Calcium is Ca. This Top Homework Answer is High School level and belongs to the Chemistry subject. Typical densities of various substances are at atmospheric pressure. Its atomic number is 7 and it is denoted by the symbol ‘N’ in the periodic table. The chemical symbol for Nickel is Ni. The chemical symbol for Argon is Ar. The chemical symbol for Niobium is Nb. The chemical symbol for Antimony is Sb. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). which statement is true about bf3 a nonpolar molecule; 16 3 as a mixed number 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. Because of its high chemical reactivity, barium is never found in nature as a free element. The chemical symbol for Vanadium is V. Vanadium is a hard, silvery grey, ductile, and malleable transition metal. Like all elements with atomic number over 100, lawrencium can only be produced in particle accelerators by bombarding lighter elements with charged particles. The mass of an atom relative to that of carbon-12. Protons are particles in the nucleus of an atom that have a positive charge equal to +1. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Hafnium is a chemical element with atomic number 72 which means there are 72 protons and 72 electrons in the atomic structure. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. The chemical symbol for Palladium is Pd. Rhenium is a chemical element with atomic number 75 which means there are 75 protons and 75 electrons in the atomic structure. 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