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The decay level scheme for 26 Al and 26m Al to 26 Mg. [8] [10]Cosmogenic aluminium-26 was first described in studies of the Moon and meteorites. Meteorite fragments, after departure from their parent bodies, are exposed to intense cosmic-ray bombardment during their travel through space, causing substantial 26 Al production.
· Symbol K is for the Latin name kalium, from Arabic القلي (al qalīy), which means "calcined ashes". Calcium (Ca) 20 χάλιξ / calx: Greek/Latin "pebble"/"limestone" [20] From Latin calx, which means "lime". Calcium was known as early as the first century when the Ancient Romans prepared lime as calcium oxide. Scandium (Sc) 21 Scandia ...
The only stable chalcogenides under normal conditions are aluminium sulfide (Al 2 S 3), selenide (Al 2 Se 3), and telluride (Al 2 Te 3). All three are prepared by direct reaction of their elements at about 1,000 °C (1,800 °F) and quickly hydrolyze completely in water to yield aluminium hydroxide and the respective hydrogen chalcogenide .
The configurations of the elements in this table are written starting with [Og] because oganesson is expected to be the last prior element with a closed-shell (inert gas) configuration, 1s 2 2s 2 2p 6 3s 2 3p 6 3d 10 4s 2 4p 6 4d 10 4f 14 5s 2 5p 6 5d 10 5f 14 6s 2 6p 6 6d 10 7s 2 7p 6. Similarly, the [172] in the configurations for elements ...
A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements.The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behavior of the elements as their atomic number increases; a new row is started when chemical behavior begins to repeat, creating columns of elements with similar properties.
The musical notation displays 1 as relative do, 2 as relative re, etc. Higher octave marked with a dot above, and lower octave marked with a dot below. Also, some alternatives notations is writing the exact written numbers on the single angklung to the musical sheet, usually marked 0–31, 0 is the lowest tone and 31 is the highest tone.
Business and economy BP raises the estimated cost of the Deepwater Horizon oil spill in the Gulf of Mexico to $40 billion. (Reuters) California voters reject a proposition that would have suspended indefinitely the operation of that state's cap-and-trade bill, Global Warming Solutions Act of 2006, known as "AB 32". (AP) Disasters and accidents At least 14 people are killed as Tropical Storm ...
Business and economy Norway investigates whether Nobel Peace Prize laureate Muhammad Yunus diverted millions of dollars of aid money from the Grameen Bank but expresses certainty that nothing criminal has occurred. (BBC) Disasters Thousands of New Zealanders gather at the Omoto racecourse to commemorate the victims of the Pike River Mine disaster. (BBC) More than 55,000 animals are being ...