7 protons 7 neutrons 7 electrons. 8. A. Thorium is moderately hard, malleable, and has a high melting point. It is even less abundant than the so-called rare earths. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 electrons in the atomic structure. O^2- will have two more electrons or 10. The chemical symbol for Copper is Cu. is a rare earth element with a metallic silver luster. What is nitrogen's atomic number? The chemical symbol for Silver is Ag. Thulium is an easily workable metal with a bright silvery-gray luster. Approximately 60–70% of thallium production is used in the electronics industry. Tellurium is chemically related to selenium and sulfur. Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. Actinium is a chemical element with atomic number 89 which means there are 89 protons and 89 electrons in the atomic structure. Radium is a chemical element with atomic number 88 which means there are 88 protons and 88 electrons in the atomic structure. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. It is a noble metal and a member of the platinum group. Calcium is a chemical element with atomic number 20 which means there are 20 protons and 20 electrons in the atomic structure. Dysprosium is used for its high thermal neutron absorption cross-section in making control rods in nuclear reactors, for its high magnetic susceptibility in data storage applications. 16 - 8 = 8. The oxide anion has a charge of 2-. Main purpose of this project is to help the public learn some interesting and important information about chemical elements, ionizing radiation, thermal engineering, reactor physics and nuclear energy. Which of the following is a property of water? Hydrogen: 1 proton. Become a Study.com member to unlock this Electron configuration is complicated. Thorium metal is silvery and tarnishes black when exposed to air, forming the dioxide. Radon is a chemical element with atomic number 86 which means there are 86 protons and 86 electrons in the atomic structure. What does the number of neutrons determine? Create your account. In some respects zinc is chemically similar to magnesium: both elements exhibit only one normal oxidation state (+2), and the Zn2+ and Mg2+ ions are of similar size. The chemical symbol for Oxygen is O. The chemical symbol for Rhenium is Re. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. Elemental sulfur is a bright yellow crystalline solid at room temperature. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic. Aluminium is a silvery-white, soft, nonmagnetic, ductile metal in the boron group. Tags: Question 10 . Titanium can be used in surface condensers. The chemical symbol for Nickel is Ni. Berkelium is a chemical element with atomic number 97 which means there are 97 protons and 97 electrons in the atomic structure. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. Choose the calculator you like. Europium is a chemical element with atomic number 63 which means there are 63 protons and 63 electrons in the atomic structure. 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