The element is of interest because it is part of the hypothesized island of stability, with isotope 304 being the most stable. ...

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Unbinilium, Unbinilium - History, Unbinilium - Stable Unbinilium

Read more here: » Unbinilium: Encyclopedia II - Unbinilium - Stable Unbinilium

See also:

Binding energy, Binding energy - Binding energy of a deuteron 2H, Binding energy - Nuclear binding energy curve, Binding energy - Measuring the binding energy

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61 number - In the periodic table. The chemical element with the atomic number 61 (promethium), a lanthanide, is the element with the secondary lowest ordinal number, which does not possess any stable isotopes. The promethium preceding element with atomic number 60 (neodymium) and the promethium following element 62 (samarium) have all stable isotopes. 61 number - In astronomy. Messier object M61, a magnitude 10.5 galaxy in the constellation Virgo < ...

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61 number, 61 number - In mathematics, 61 number - In science, 61 number - In the periodic table, 61 number - In astronomy, 61 number - In other fields

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Dubnium (formerly also called Eka-Tantalum, Hahnium and Unnilpentium) is a chemical element in the periodic table that has the symbol Db and atomic number 105. This is a highly radioactive synthetic element whose most stable isotope has a half life of 16 hours (dubnium-268). This relatively high stability compared to the surrounding elements on the periodic table gives evidence that by manipulating the number of neutrons in a nucleus, ...

Including:

• Dubnium - History

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The atomic mass of a chemical element (also known as the relative atomic mass or average atomic mass or atomic weight) is the average atomic mass of all the chemical element's isotopes as found in a particular environment, weighted by isotopic abundance. Periodic tables usually list these with reference to the local environment of Earth's crust and atmosphere. For artificial elements the nucleon count of the most stable is ...

Including:

• Atomic mass - History

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Ytterbium is a chemical element in the periodic table that has the symbol Yb and atomic number 70. A soft silvery metallic element, ytterbium is a rare earth of the lanthanide series and is found in the minerals gadolinite, monazite, and xenotime. The element is sometimes associated with yttrium or other related elements and is used in certain steels. Natural ytterbium is a mix of seven stable isotopes. Ytterbium - Notable characteristics. Ytterbium is a soft, malleable and rather ductile element tha ...

Including:

• Ytterbium - Notable characteristics
• Ytterbium - Applications
• Ytterbium - History
• Ytterbium - Occurrence
• Ytterbium - Isotopes
• Ytterbium - Precautions

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A stem, in linguistics, is the combination of the basic form of a word (called the root) plus any derivational morphemes, but excluding inflectional elements. This means, alternatively, that the stem is the form of the word to which inflectional morphemes can be added, if applicable. For example, the root of the English verb form destabilized is stabil- (alternate form of stable); the stem is de·stabil·ize, which includes the derivational affixes de- and -ize, but not ...

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• Word stem - Reference

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Ununquadium (eka-lead) is the temporary name of a radioactive chemical element in the periodic table that has the temporary symbol Uuq and has the atomic number 114. Ununquadium - History. In January 1999, ununquadium was reported informally by scientists at Dubna (Joint Institute for Nuclear Research) in Russia. The same team produced another isotope of Uuq three months later. Since then, no one has seriously challenged the finding. Ununquadium is a temporary IUPAC systematic element name. Some have ...

Including:

• Ununquadium - History
• Ununquadium - Synthesis
• Ununquadium - Stable Ununquadium

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Antimony is a chemical element in the periodic table that has the symbol Sb (L. Stibium) and atomic number 51. A metalloid, antimony has four allotropic forms. The stable form of antimony is a blue-white metal. Yellow and black antimony are unstable non-metals. Antimony is used in flame-proofing, paints, ceramics, enamels, a wide variety of alloys, electronics, and rubber. Antimony - Notable characteristics. Antimony in its elemental form is a silvery white, brittle, fusible, crystalline solid ...

Including:

• Antimony - Notable characteristics
• Antimony - Applications
• Antimony - History
• Antimony - Sources
• Antimony - Precautions
• Antimony - Compounds

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Lead is a chemical element in the periodic table that has the symbol Pb (L. plumbum) and atomic number 82. A soft, heavy, toxic and malleable poor metal, lead is bluish white when freshly cut but tarnishes to dull gray when exposed to air. Lead is used in building construction, lead-acid batteries, bullets and shot, and is part of solder, pewter, and fusible alloys. Lead has the highest atomic number of all stable elements. (But see the article on Bismuth, which has a half life so long it can be cons ...

Including:

• Lead - Notable characteristics
• Lead - Applications
• Lead - History
• Lead - Occurrence
• Lead - Isotopes
• Lead - Precautions
• Lead - Health effects
• Lead - Language derivations
• Lead - Literature

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Argon is a chemical element in the periodic table. It has the symbol Ar and atomic number 18. The third noble gas, in group 18, argon makes up about 1% of the Earth's atmosphere, making it the most common noble gas on Earth. Argon - Notable characteristics. Argon is 2.5 times as soluble in water as nitrogen which is approximately the same solubility as oxygen. This highly stable chemical element is colorless and odorless in both its liquid and gaseous forms. There are few known true che ...

Including:

• Argon - Notable characteristics
• Argon - Applications
• Argon - History
• Argon - Occurrence
• Argon - Compounds
• Argon - Isotopes

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Yttrium is a chemical element in the periodic table that has the symbol Y and atomic number 39. A silvery metallic transition metal, yttrium is common in rare-earth minerals and two of its compounds are used to make the red color in color televisions. Yttrium - Notable Characteristics. Yttrium is a silver-metallic, lustrous rare earth metal that is relatively stable in air and chemically resembles the lanthanides. Shavings or turnings of the metal can ignite in air when they exceed 400 °C. When yttr ...

Including:

• Yttrium - Notable Characteristics
• Yttrium - Applications
• Yttrium - History
• Yttrium - Occurrence
• Yttrium - Isotopes
• Yttrium - Precautions

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The atomic radius is the distance from the atomic nucleus to the outmost stable electron orbital in an atom that is at equilibrium. It is measured in picometers or angstroms. Atomic radii are called covalent radii (a reference to the types of covalent bonds formed) when referring to non-metallic elements and metallic radii when referring to metals. Technically, the atomic radius is one half of the equilibrium internuclear distance between two adjacent atoms (which may either bonded covalently or present in a close ...

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Carbon-12 is the more abundant (98.89%) of the two stable isotopes of the element carbon. It contains 6 protons, 6 neutrons and 6 electrons. Carbon-12 is of particular importance as it is used as the standard from which all other isotopes' atomic weight is measured and thus the measurement of Avogadro's number. Carbon-12 - History. Prior to 1959 both the IUPAP and IUPAC tended to use used oxygen to define the mole, the chemists defining the mole as the number of atoms of oxygen which had mass ...

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• Carbon-12 - History

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Chromium is a chemical element in the periodic table that has the symbol Cr and atomic number 24. Chromium - Notable characteristics. Chromium is a steel-gray, lustrous, hard metal that takes a high polish, melts with difficulty, and tarnishes. The most common oxidation states of chromium are +2, +3, and +6, with +3 being the most stable. +4 and +5 are rare. Chromium compounds of oxidation state 6 are powerful oxidants. Chromium(0) is unstable in oxygen, immediately producing a thin oxi ...

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• Chromium - Notable characteristics
• Chromium - Applications
• Chromium - History
• Chromium - Biological role
• Chromium - Occurrence
• Chromium - Compounds
• Chromium - Isotopes
• Chromium - Chromium and the quintuple bond
• Chromium - Precautions

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Life in Egypt The Culture of Egypt has five thousand years of recorded history. Ancient Egypt was among the earliest civilizations. For millennia, Egypt maintained a strikingly complex and stable culture that had a profound influence on later cultures of Europe, the Middle East and Africa. After the Pharaonic era, Egypt itself came under the influence of Hellenism, for a time Christianity, and later, Arab and Islamic culture. Today, many aspects of Egypt's ancient culture exist in interaction with newer elements, includin ...

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• Culture of Egypt - Language
• Culture of Egypt - Literature
• Culture of Egypt - Religion
• Culture of Egypt - Visual art
• Culture of Egypt - Egyptian art in antiquity
• Culture of Egypt - Egyptian art in modern times
• Culture of Egypt - Science
• Culture of Egypt - Ptolemy
• Culture of Egypt - Eratosthenes
• Culture of Egypt - Library of Alexandria
• Culture of Egypt - Ahmed Hasan Zewail
• Culture of Egypt - Egyptology
• Culture of Egypt - Music and dance
• Culture of Egypt - Cuisine

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Berkelium is a synthetic element in the periodic table that has the symbol Bk and atomic number 97. A radioactive metallic element in the actinide series, berkelium was first synthesized by bombarding americium with alpha particles (helium ions) and was named after Berkeley, California. Berkelium was the fifth transuranic element to be synthesized. Berkelium - Notable characteristics. Weighable amounts of berkelium-249 (half-life 314 days) make it possible to determine some of its properties using macroscop ...

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• Berkelium - Notable characteristics
• Berkelium - History
• Berkelium - Isotopes

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Lutetium is a silvery white corrosion-resistant trivalent metal that is relatively stable in air and is the heaviest and hardest of the rare earth elements. Lutetium has the highest spin quantum number of the elements, at 7. This element is very expensive to obtain in useful quantities and therefore it has very few commercial uses. However, stable lutetium can be used as catalysts in petroleum cracking in refineries and can also b ...

See also:

Lutetium, Lutetium - Notable characteristics and applications, Lutetium - History, Lutetium - Occurrence, Lutetium - Isotopes, Lutetium - Compounds, Lutetium - Precautions

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Definition and meaning of stable isotope:

stable isotope - an isotope of a chemical element which is not spontaneously radioactive. Elements can exist in both stable and unstable (radioactive) forms. Most elements of biological interest (including C, H, O, N, and S) have two or more stable isotopes, with the lightest of these present in much greater abundance than the others. Among stable isotopes the most useful as biological tracers are the heavy isotopes of carbon and nitrogen. These two elements are found in the earth, the atmosphere, and all organisms

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

Also see these pages: Oceanography, Oceanography Sitemap, Coral Reef, Environment, Sustainability, Climate Change,

The series of light element from hydrogen up to sodium have increasing binding energy per nucleon as the atomic mass increases, a region of stability (saturation) occurs from magnesium through xenon, and then binding energy per nucleon decreases as the atomic mass increases. Nickel-62 is the most stable and tightly bound nucleus, followed by iron-58 and iron-56. Fusion produces energy by combining lighter elements into a more stable tighter bound element such as hydrogen into helium, and fission produces energy by splitting heavier elements such a ...

See also:

Binding energy, Binding energy - Binding energy of a deuteron 2H, Binding energy - Nuclear binding energy curve, Binding energy - Measuring the binding energy

Read more here: » Binding energy: Encyclopedia II - Binding energy - Nuclear binding energy curve