francium वाक्य
उदाहरण वाक्य
मोबाइल
- Anyway, too little again about all ( even francium ).
- Would have thought francium, if not for its radioactivity.
- Taken from SUNY Stony Brook's Francium news page.
- Francium-221 has a half-life of 4.8 minutes.
- Cropped image of device used to trap Francium atoms.
- Germanium, Europium, Francium, and Americum, are some of the obvious ones.
- Some of these nuclides are very short-lived, such as isotopes of francium.
- I'll reread the ChemEducator entry, which focuses on the discovery of francium.
- Recently, Sprouse and his colleagues have analyzed trapped clouds of atoms of the element francium.
- Bulk francium has never been viewed.
- In 1939, Perey discovered the element francium by purifying samples of lanthanum that contained actinium.
- Of elements whose most stable isotopes have been identified with certainty, francium is the most unstable.
- So even the " meaning " of a melting point for francium is a bit obscure.
- I don't think you need a citation for saying that francium salts are expected to be soluble.
- Francium does not exist for long enough to be able to react with water due to its extreme instability.
- Francium-221 then decays into astatine-217 by alpha decay ( 6.457 MeV decay energy ).
- Francium's ability to be synthesized, trapped, and cooled, along with its relatively simple quantum theory.
- "' Francium "'is a chemical element that has the symbol Fr and atomic number 87.
- All other previous purported discoveries of element 87 were ruled out due to francium's very limited half-life.
- An example is the separation of francium from other radioactive elements by coprecipitating it with caesium salts such as caesium perchlorate.
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