Cerium is the second element in the lanthanide series. Get an answer to your question “Element Name Symbol Mass Number Atomic Number Number of Protons Number of Neutrons Number of Electrons Lithium Carbon Chlorine Silver Lead ...” in Chemistry if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions. Americium (Am) is a chemical element having 95 protons, same as how many Americium-241 has. Tellurium is chemically related to selenium and sulfur. The chemical symbol for Lawrencium is Lr. Cadmium is a soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Thorium is commonly found in monazite sands (rare earth metals containing phosphate mineral). [111], If consumed, most of the americium is excreted within a few days, with only 0.05% absorbed in the blood, of which roughly 45% goes to the liver and 45% to the bones, and the remaining 10% is excreted. Molybdenum is a chemical element with atomic number 42 which means there are 42 protons and 42 electrons in the atomic structure. Its physical and chemical properties are most similar to its heavier homologues strontium and barium. Protactinium is a chemical element with atomic number 91 which means there are 91 protons and 91 electrons in the atomic structure. This element is radioactive and can be safely used in small amounts. Electrons per Energy Level: 2,8,18,32,25,8,2 Shell Model; Ionic Radius: 0.982Å; Filling Orbital: 5f 7; Number of Electrons (with no charge): 95; Number of Neutrons (most common/stable nuclide): 148; Number of Protons: 95; Oxidation States: 6,5,4,3; Valence Electrons: 5f 7 7s 2. The americium was produced by bombarding plutonium with neutrons in a nuclear reactor. The chemical symbol for Mendelevium is Md. Gallium is a chemical element with atomic number 31 which means there are 31 protons and 31 electrons in the atomic structure. 113Cd has specific absorption cross-section. The chemical symbol for Nickel is Ni. Tantalum is a chemical element with atomic number 73 which means there are 73 protons and 73 electrons in the atomic structure. Americium has 95 protons and electrons. The chemical symbol for Nitrogen is N. Nitrogen is a colourless, odourless unreactive gas that forms about 78% of the earth’s atmosphere. It is used in smoke detectors and can be used as a portable source of gamma rays. See also: Atomic Number – Does it conserve in a nuclear reaction? Americium: Symbol:"Am" Atomic Number:"95" Atomic Mass: (243)amu. Neon is a colorless, odorless, inert monatomic gas under standard conditions, with about two-thirds the density of air. Vanadium is a chemical element with atomic number 23 which means there are 23 protons and 23 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. Americium is a starting material for the production of other transuranic elements and transactinides – for example, 82.7% of 242Am decays to 242Cm and 17.3% to 242Pu. Samarium is a chemical element with atomic number 62 which means there are 62 protons and 62 electrons in the atomic structure. Chromium is a steely-grey, lustrous, hard and brittle metal4 which takes a high polish, resists tarnishing, and has a high melting point. Chemical Properties of Americium. Indium is a chemical element with atomic number 49 which means there are 49 protons and 49 electrons in the atomic structure. Nineteen radioisotopes of americium— 223 Am, 229 Am, 230 Am, and those ranging from 232 Am to 247 Am—have been characterized, with the most stable being 243 Am with a half-life of 7,370 years, and 241 Am with a half-life of 432.2 years. 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 Plutonium is Pu. The biological half-life of 241Am is 50 years in the bones and 20 years in the liver, whereas in the gonads (testicles and ovaries) it remains permanently; in all these organs, americium promotes formation of cancer cells as a result of its radioactivity. Niobium is a soft, grey, ductile transition metal, often found in the minerals pyrochlore (the main commercial source for niobium) and columbite. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Its design relies not on the energy of the emitted by americium alpha particles, but on their charge, that is the americium acts as the self-sustaining "cathode". Oxygen is a chemical element with atomic number 8 which means there are 8 protons and 8 electrons in the atomic structure. Ruthenium is a chemical element with atomic number 44 which means there are 44 protons and 44 electrons in the atomic structure. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. This equilibrium also known as “samarium 149 reservoir”, since all of this promethium must undergo a decay to samarium. It is the Pauli exclusion principle that requires the electrons in an atom to occupy different energy levels instead of them all condensing in the ground state. Actinium is a soft, silvery-white radioactive metal. 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. © 2019 periodic-table.org / see also Under standard conditions, it is the lightest metal and the lightest solid element. The chemical symbol for Curium is Cm. Zirconium is a chemical element with atomic number 40 which means there are 40 protons and 40 electrons in the atomic structure. Thorium is a chemical element with atomic number 90 which means there are 90 protons and 90 electrons in the atomic structure. Depict its electron configuration using … Enroll in … The chemical symbol for Gold is Au. If the charge is negative, electrons are in excess. The ninth member of the lanthanide series, terbium is a fairly electropositive metal that reacts with water, evolving hydrogen gas. The chemical symbol for Polonium is Po. Uranium is a silvery-white metal in the actinide series of the periodic table. The chemical symbol for Berkelium is Bk. It is by mass the most common element on Earth, forming much of Earth’s outer and inner core. Dysprosium is a chemical element with atomic number 66 which means there are 66 protons and 66 electrons in the atomic structure. It is the electrons that are responsible for the chemical bavavior of atoms, and which identify the various chemical elements. [97][98][99][100], As 241Am has a roughly similar half-life to 238Pu (432.2 years vs. 87 years), it has been proposed as an active element of radioisotope thermoelectric generators, for example in spacecraft. ", ATSDR – Public Health Statement: Americium, World Nuclear Association – Smoke Detectors and Americium, https://en.wikipedia.org/w/index.php?title=Americium&oldid=995109620, Short description is different from Wikidata, Беларуская (тарашкевіца)‎, Srpskohrvatski / српскохрватски, Creative Commons Attribution-ShareAlike License, This page was last edited on 19 December 2020, at 07:53. Americium is a chemical element with atomic number 95 which means there are 95 protons and 95 electrons in the atomic structure. [83], Americium is an artificial element of recent origin, and thus does not have a biological requirement. [80] A cyclopentadienyl complex is also known that is likely to be stoichiometrically AmCp3. Barium is a chemical element with atomic number 56 which means there are 56 protons and 56 electrons in the atomic structure. 1. Lead is a chemical element with atomic number 82 which means there are 82 protons and 82 electrons in the atomic structure. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Discoverer: Marinsky, Jacob A. and Coryell, Charles D. and Glendenin, Lawerence. Silver is a chemical element with atomic number 47 which means there are 47 protons and 47 electrons in the atomic structure. These elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. Americium atoms have 95 electrons and the shell structure is 2.8.18.32.25.8.2. 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. 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