TETRAHEDRAL CRYSTALS

<body topmargin=0 leftmargin=0 marginheight=0 marginwidth=0> <table cellpadding=0 cellspacing=0 border=0><tr> <td valign="top" colspan=2 height=27 BGCOLOR="#006699" TEXT="#080000"> <div> <FONT SIZE="2" COLOR="#FFFFFF" FACE="Arial" ><B>CHEMISTRY SCHOOL</B></FONT><FONT SIZE="1" COLOR="#FFFFCC" FACE="Arial" ><B>   </B></FONT><B>  </B><A HREF="index.htm" TARGET="_top" TITLE="CHEMISTRY SCHOOL"><U>HOME PAGE - INDEX TO THE LESSONS</U></A>        <B>         </B> TETRA-HEDRAL SHAPED •  MOLECULAR CRYSTALS</div> <div> </div> </td> </tr><tr> <td valign="top" width=248 BGCOLOR="#66CCCC" TEXT="#080000"> <div> <FONT SIZE="1" COLOR="#003399" FACE="Arial" > </FONT>    THE MOLECULAR CRYSTALS</div> <div>                 <A HREF="crystals.htm" TARGET="_top" TITLE="WHAT ARE CRYSTALS?"><U>INTRODUCTION</U></A></div> <div> <I>> RECTANGULAR FACED CRYSTALS</I></div> <div> 1. <A HREF="cubic_crystals.htm" TARGET="_top" TITLE="CUBIC CRYSTALS"><U>CUBIC CRYSTALS</U></A></div> <div> 2. <A HREF="tetragonal_crystals.htm" TARGET="_top" TITLE="TETRAGONAL CRYSTALS"><U>TETRAGONAL CRYSTALS</U></A></div> <div> 3  <A HREF="orthorhomic_crystal.htm" TARGET="_top" TITLE="SIMPLE ORTHORHOMBIC CRYSTALS"><U>SIMPLE ORTHO-RHOMBIC</U></A> </div> <div> 4. <A HREF="top_centered_orthorhomic_crystals.htm" TARGET="_top" TITLE="TOP CENTERED ORTHORHOMBIC"><U>TOP CENTERED ORTHORHOMBIC</U></A></div> <div> 5. <A HREF="face_centered_crystals.htm" TARGET="_top" TITLE="FACE CENTERED ORTHORHOMBIC"><U>FACE CENTERED ORTHORHOMBIC</U></A> </div> <div> 6. <A HREF="equi_centric_orthorombic.htm" TARGET="_top" TITLE="EQUICENTRIC ORTHORHOMBIC"><U>EQUI-CENTRIC ORTHORHOMBIC</U></A></div> <div> <I>> TRIANGULAR, RHOMBOHEDRAL</I></div> <div> <I>   & HEXAGONAL CRYSTALS </I></div> <div> 1. <A HREF="trigonal_crystals.htm" TARGET="_top" TITLE="TRIGONAL CRYSTALS"><U>TRIGONAL CRYSTALS</U></A></div> <div> 2. <A HREF="tetrahedral_molecular_crystals.htm" TARGET="_top" TITLE="TETRAHEDRAL CRYSTALS"><U>TETRA-HEDRAL  CRYSTALS </U></A></div> <div> 3. <A HREF="hexahedral_crystals.htm" TARGET="_top" TITLE="HEXAHEDRAL CRYSTALS"><U>HEXA HEDRAL CRYSTALS</U></A></div> <div> 4. <A HREF="octa_hedral_crystals.htm" TARGET="_top" TITLE="OCTAHEDRAL CRYSTALS"><U>OCTA HEDRAL CRYSTALS</U></A></div> <div> 5. <A HREF="rhombohedral_crystals.htm" TARGET="_top" TITLE="RHOMBOHEDRAL CRYSTALS"><U>RHOMBOHEDRAL CRYSTALS</U></A></div> <div> 6. <A HREF="hexagonal_molecular_crystals.htm" TARGET="_top" TITLE="HEXAGONAL CRYSTALS"><U>HEXAGONAL CRYSTALS</U></A></div> <div> 7. <A HREF="parallelepiped_molecular_crystals.htm" TARGET="_top" TITLE="PARALLELEPIPED CRYSTALS"><U>PARALLELEPIPED CRYSTALS</U></A></div> <bR> <bR> <bR> <div>            </div> <bR> </td> <td valign="top" height=453 BGCOLOR="#66CCCC" TEXT="#080000"> <div> <I>TETRAHEDRAL CRYSTALS</I></div> <div> <TABLE BORDER="1" CELLPADDING="4" CELLSPACING="0" WIDTH="502" BORDERCOLORLIGHT="#993380" BORDERCOLORDARK="#993380" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFFF > <tR> <tD VALIGN=TOP COLSPAN=2 HEIGHT= 15 WIDTH="482"><div> TETRAHEDRAL SHAPED MOLECULAR CRYSTALS</div> </tD> </tR> <tR> <tD VALIGN=CENTER ROWSPAN=2 HEIGHT= 163 ><NOBR><div>   TETRAHEDRON MOLECULAR CRYSTALS</div> <div>   1  HAVE 4 EQUAL TRIANGULAR SIDES </div> <div>   2. HAVE 4 EQUAL ANGLES</div> <div>   3. HAVE A TRIANGULAR BOTTOM SIDE</div> <div>   4. HAVE AN EVEN NUMBER OF ATOMS</div> <div>   A TETRAHEDRON MAY APPEAR TO YOU</div> <div>   TO BE A PYRAMID, BUT IT IS NOT.</div> <div>   A PYRAMID HAS 4 TRIANGULAR SIDES</div> <div>   AND A SQUARE BOTTOM </div> </NOBR></tD> <tD VALIGN=TOP WIDTH="235"><div> <IMG SRC="105c789e0.gif" border=0 width="120" height="158" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </tD> </tR> <tR> <tD VALIGN=TOP WIDTH="235"><div> TOP & SIDE VIEWS</div> </tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 173 ><NOBR><div> <IMG SRC="105ea88e0.gif" border=0 width="168" height="142" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=CENTER><NOBR><div> <IMG SRC="1060bea80.gif" border=0 width="190" height="168" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 15 ><NOBR><div> A SIMPLE TETRAHEDRAL CRYSTAL</div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> AN OVERALL VIEW OF THE CRYSTAL</div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 228 ><NOBR><div> <IMG SRC="1061cbdf0.gif" border=0 width="203" height="223" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=CENTER><NOBR><div> <IMG SRC="1062cadf0.gif" border=0 width="202" height="223" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 15 WIDTH="245"><div> A TETRAHEDRAL CRYSTAL</div> </tD> <tD VALIGN=TOP><NOBR><div> AN OVERALL VIEW OF THE CRYSTAL</div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER ROWSPAN=2 HEIGHT= 226 ><NOBR><div> THERE ARE MANY CARBON & HALOGEN</div> <div>  TETRAHEDRAL MOLECULAR CRYSTALS</div> <div> THAT HAVE THIS TETRAHEDRAL FORM.</div> <div> THAT PRODUCE FLAMMABLE LIQUIDS</div> <div> & GASES SIMILAR TO ACETYLENE.</div> <div> THERE ARE ALSO <A HREF="simplified_atomic_names.htm" TARGET="_top" TITLE="NEW SIMPLIFIED NAMES"><U>GERMON</U></A><A HREF="simplified_atomic_names.htm" TARGET="_top" TITLE="NEW SIMPLIFIED NAMES"><U> </U></A>HALIDES</div> <div> THAT ARE USED IN GERMON LIQUID</div> <div> CRYSTAL LIGHTING DISPLAYS.</div> <div> ANY CO-VALENT 4, METAL</div> <div> USEFUL TO TREES, CAN BE MADE,</div> <div> INTO A FERTILIZER, WHEN COMBINED</div> <div>  WITH THE PROPER HALOGEN </div> </NOBR></tD> <tD VALIGN=CENTER WIDTH="235"><div> <IMG SRC="106479c50.gif" border=0 width="121" height="197" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </tD> </tR> <tR> <tD VALIGN=TOP WIDTH="235"><div> A VIEW OF THE TOP & SIDE</div> </tD> </tR> </TABLE></div> <div>     <A HREF="tetrahedral_molecular_crystals_m.htm" TITLE="TETRAHEDRAL CRYSTALS"><U>BACK TO TOP</U></A></div> <bR> </td> </tr></table></body>