Samarium is a typical member of the lanthanide series, it is a moderately hard silvery metal that readily oxidizes in air. Since the number of protons in chromium is 24, then the number of neutrons in chromium-52 is 28. Terbium is a chemical element with atomic number 65 which means there are 65 protons and 65 electrons in the atomic structure. Hafnium is a lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Although to understand our money back policy you should check the term and condition section. Very soft and malleable, indium has a melting point higher than sodium and gallium, but lower than lithium and tin. Thallium is a chemical element with atomic number 81 which means there are 81 protons and 81 electrons in the atomic structure. Its boiling point is the lowest among all the elements. Sodium is a soft, silvery-white, highly reactive metal. Chromium-53: 29 neutrons. It is also the most corrosion-resistant metal, even at temperatures as high as 2000 °C. Mendelevium is a metallic radioactive transuranic element in the actinide series, it is the first element that currently cannot be produced in macroscopic quantities. The chemical symbol for Terbium is Tb. The atomic mass or relative isotopic mass refers to the mass of a single particle, and therefore is tied to a certain specific isotope of an element. Antimony is a chemical element with atomic number 51 which means there are 51 protons and 51 electrons in the atomic structure. Explain.

C- The air inside the bottle pushes outward on the bottle. Its boiling point is the lowest among all the elements.

Get $25 Free For Your Homework Writing Help. The information contained in this website is for general information purposes only. It is a noble metal and a member of the platinum group. The chemical symbol for Antimony is Sb.

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A compound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (N) and 69.6% oxygen (O). Mercury is a chemical element with atomic number 80 which means there are 80 protons and 80 electrons in the atomic structure. 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 |. In case you are wondering, can someone write my research paper? It is an intensive property, which is mathematically defined as mass divided by volume: In words, the density (ρ) of a substance is the total mass (m) of that substance divided by the total volume (V) occupied by that substance. The chemical symbol for Zirconium is Zr.

Which observation describes a chemical property of the iron? The chemical symbol for Californium is Cf. Caesium has physical and chemical properties similar to those of rubidium and potassium. Nobelium is the tenth transuranic element and is the penultimate member of the actinide series. Under standard conditions, it is the lightest metal and the lightest solid element. Select all the correct answers. Argon is mostly used as an inert shielding gas in welding and other high-temperature industrial processes where ordinarily unreactive substances become reactive; for example, an argon atmosphere is used in graphite electric furnaces to prevent the graphite from burning. The chemical symbol for Promethium is Pm.

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