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atomic number 91- a short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into lead protactinium,protoactinium,Pa metal,metallic element- any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed ...
A pile of that number (one "mole") of Plutonium-239 would weigh exactly 239 grams. The point is, you can use this to convert between atomic mass units and grams. Basically you divide Avogadro constant by the atomic mass of the element to find the number of atoms of that element in ...
List of atomic nucleus by neutron number What is the biggest atomic nucleus naturally found on earth? The cube shaped atomic nucleus WebGL Online Game 6440 Little Uvas Morgan Hill Mountain Land Property Nuclear Cubic Structure Proton Configuration ...
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原子质量表(talbe of atomic masses)
Atomic Number: 94 Symbol: Pu Atomic Weight: 244.0642 Discovery: G.T. Seaborg, J.W. Kennedy, E.M. McMillan, A.C. Wohl (1940, United States). The first sample of plutonium was produced by deuteron bombardment of uranium in a cyclotron at the University of California at Berkeley. The...
Plutonium is not magnetic. Other members of the element group stick to magnets, but plutonium can have a variable number of electrons in its valence shell, which makes it difficult for the unpaired electrons to align in a magnetic field. ...