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<p>and <a href="page.php?w=perchlorate">perchlorate</a> . Attempts to make the <a href="page.php?w=nitrate">nitrate</a> salt, , were unsuccessful because of quick fluorination:  +  ->  + .</p>

<p><big> Structure </big></p>
<p>The geometry of the tetrafluoroammonium ion is <a href="page.php?w=tetrahedral_molecular_geometry">tetrahedral</a>, with an estimated nitrogen-fluorine bond length of 124&nbsp;<a href="page.php?w=Picometre">pm</a>. All fluorine atoms are in equivalent positions.</p>

<p><big> Synthesis </big></p>
<p>Tetrafluoroammonium salts are prepared by</p><p>
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