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Typical densities of various substances are at atmospheric pressure. This effect is caused by a decrease in the atomic number density. Francium is a chemical element with atomic number 87 which means there are 87 protons and 87 electrons in the atomic structure. 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). Promethium is one of only two such elements that are followed in the periodic table by elements with stable forms. Francium is a highly radioactive metal that decays into astatine, radium, and radon. However, assuming that the earth However, this assumes the atom to exhibit a spherical shape, which is only obeyed for atoms in vacuum or free space. It is a synthetic element (first synthesised at Hasse in Germany) and radioactive. The chemical symbol for Cerium is Ce. check_circle Expert Answer. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. Tellurium is chemically related to selenium and sulfur. The chemical symbol for Iron is Fe. Terbium is a silvery-white, rare earth metal that is malleable, ductile, and soft enough to be cut with a knife. The chemical symbol for Hydrogen is H. With a standard atomic weight of circa 1.008, hydrogen is the lightest element on the periodic table. 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. Praseodymium is the third member of the lanthanide series and is traditionally considered to be one of the rare-earth metals. Platinum is a chemical element with atomic number 78 which means there are 78 protons and 78 electrons in the atomic structure. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Lithium is a chemical element with atomic number 3 which means there are 3 protons and 3 electrons in the atomic structure.

Join Yahoo Answers and get 100 points today. 113Cd has specific absorption cross-section. Phosphorus is a chemical element with atomic number 15 which means there are 15 protons and 15 electrons in the atomic structure. Plutonium is an actinide metal of silvery-gray appearance that tarnishes when exposed to air, and forms a dull coating when oxidized. At 0.099%, phosphorus is the most abundant pnictogen in the Earth’s crust. 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. The chemical symbol for Astatine is At. 1) You may use almost everything for non-commercial and educational use. Bromine is the third-lightest halogen, and is a fuming red-brown liquid at room temperature that evaporates readily to form a similarly coloured gas. Gold is thought to have been produced in supernova nucleosynthesis, from the collision of neutron stars. Lead is widely used as a gamma shield. Neptunium is the first transuranic element. If the earth were measured to the accuracy of a centimetre it Niobium is a chemical element with atomic number 41 which means there are 41 protons and 41 electrons in the atomic structure.

Most materials expand when their temperatures increase. Its extreme rarity in the Earth’s crust, comparable to that of platinum.

Tin is a post-transition metal in group 14 of the periodic table. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. Francium is the second-least electronegative element, behind only caesium, and is the second rarest naturally occurring element (after astatine). In nuclear industry cadmium is commonly used as a thermal neutron absorber due to very high neutron absorption cross-section of 113Cd. You can either Google this or calculate it; I did both According to Google it is 1,097,509,500,000 cubic kilometers The formula for the volume of a sphere is 4/3*3.14*r^3 so we just have to plug in the radius of the Earth and calculate. In metals, and in many other solids, the atoms are arranged in regular arrays called crystals. The chemical symbol for Argon is Ar. Its density is about 70% higher than that of lead, and slightly lower than that of gold or tungsten. Erbium is a chemical element with atomic number 68 which means there are 68 protons and 68 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 chemical symbol for Arsenic is As. What is(are) the solution(s)? would be immediately apparent that the earth is NOT spherical and Xenon is a chemical element with atomic number 54 which means there are 54 protons and 54 electrons in the atomic structure. See also: Atomic Mass Number – Does it conserve in a nuclear reaction? Holmium is a relatively soft and malleable silvery-white metal. Boron is a chemical element with atomic number 5 which means there are 5 protons and 5 electrons in the atomic structure. There are 14 general types of such patterns known as Bravais lattices. Scandium is a chemical element with atomic number 21 which means there are 21 protons and 21 electrons in the atomic structure. Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. It readily forms hard, stable carbides in alloys, and for this reason most of world production of the element (about 80%) is used in steel alloys, including high-strength alloys and superalloys. Helium is a chemical element with atomic number 2 which means there are 2 protons and 2 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. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Copper is a chemical element with atomic number 29 which means there are 29 protons and 29 electrons in the atomic structure. The chemical symbol for Lithium is Li. 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 Rubidium is Rb. Sodium is a soft, silvery-white, highly reactive metal. The classical description cannot be used to describe things on the atomic scale. Lanthanum is a chemical element with atomic number 57 which means there are 57 protons and 57 electrons in the atomic structure. Einsteinium is the seventh transuranic element, and an actinide. Praseodymium is a soft, silvery, malleable and ductile metal, valued for its magnetic, electrical, chemical, and optical properties.

Mercury is commonly known as quicksilver and was formerly named hydrargyrum. The chemical symbol for Phosphorus is P. As an element, phosphorus exists in two major forms—white phosphorus and red phosphorus—but because it is highly reactive, phosphorus is never found as a free element on Earth. Density is defined as the mass per unit volume. Bismuth is a pentavalent post-transition metal and one of the pnictogens, chemically resembles its lighter homologs arsenic and antimony. Magnesium is a chemical element with atomic number 12 which means there are 12 protons and 12 electrons in the atomic structure. Also, the radius in centimeters is 6.3713 × 10 8. The chemical symbol for Carbon is C. It is nonmetallic and tetravalent—making four electrons available to form covalent chemical bonds. The chemical symbol for Curium is Cm. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. 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. How long will the footprints on the moon last? Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Iodine is the least abundant of the stable halogens, being the sixty-first most abundant element. Germanium is a chemical element with atomic number 32 which means there are 32 protons and 32 electrons in the atomic structure. A)6,7,20(B)5,11,19(C)10,11,24(D)1,15,15? As the most electronegative element, it is extremely reactive: almost all other elements, including some noble gases, form compounds with fluorine. As a result of this expansion, the density of most materials decreases. When did organ music become associated with baseball? The volume of Earth is on the order of 1021m3. Erbium is a silvery-white solid metal when artificially isolated, natural erbium is always found in chemical combination with other elements.

The chemical symbol for Ruthenium is Ru.

The chemical symbol for Protactinium is Pa. Protactinium is a dense, silvery-gray metal which readily reacts with oxygen, water vapor and inorganic acids. Osmium is the densest naturally occurring element, with a density of 22.59 g/cm3.

The chemical symbol for Dysprosium is Dy. The chemical symbol for Einsteinium is Es. Zirconium is widely used as a cladding for nuclear reactor fuels. Therefore, there are various non-equivalent definitions of atomic radius. The chemical symbol for Polonium is Po. It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. The forces of chemical bonding causes this repetition.

al. Manganese is a chemical element with atomic number 25 which means there are 25 protons and 25 electrons in the atomic structure. Cerium is the second element in the lanthanide series. Thulium is an easily workable metal with a bright silvery-gray luster. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. Lawrencium is the final member of the actinide series. Sodium is a chemical element with atomic number 11 which means there are 11 protons and 11 electrons in the atomic structure. Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. Technetium is the lightest element whose isotopes are all radioactive; none are stable. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. Under normal conditions, sulfur atoms form cyclic octatomic molecules with a chemical formula S8. Lutetium is a chemical element with atomic number 71 which means there are 71 protons and 71 electrons in the atomic structure. Tellurium is a brittle, mildly toxic, rare, silver-white metalloid. Did the Jonas Brothers Co-Write Get Back by Demi Lovato? www.nuclear-power.net. It is the fifth most abundant element in Earth’s crust and the third most abundant metal, after iron and aluminium. is a rare earth element with a metallic silver luster. © 2019 periodic-table.org / see also

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