FACE CENTERED ORTHO-RHOMBIC

<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>•  FACE CENTERED  •  ORTHO-RHOMBIC CRYSTALS</div> <div> </div> </td> </tr><tr> <td valign="top" width=246 BGCOLOR="#66CCCC" TEXT="#080000"> <div>       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> </td> <td valign="top" height=453 BGCOLOR="#66CCCC" TEXT="#080000"> <div> <I>FACE CENTERED ORTHO-RHOMBIC</I></div> <DIV ALIGN="LEFT"></DIV> <div> <TABLE BORDER="1" CELLPADDING="5" CELLSPACING="0" WIDTH="502" BORDERCOLORLIGHT="#993380" BORDERCOLORDARK="#993380" FRAME="BOX" RULES="ALL" ALIGN="BOTTOM" HSPACE="0" VSPACE="0" BGCOLOR=#FFFFFF > <tR> <tD VALIGN=CENTER COLSPAN=2 HEIGHT= 15 ><NOBR><div> A FACE CENTERED ORTHORHOMBIC MOLECULAR CRYSTAL</div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER COLSPAN=2 HEIGHT= 125 ><NOBR><div>  1. HAS SIX RECTANGULAR SIDES,</div> <div>      WITH AN ODD NUMBER OF ATOMS</div> <div>      OR MOLECULAR GROUPS ON EACH SIDE</div> <div>  2  AN ATOM OR MOLECULAR GROUP</div> <div>      IN THE EXACT CENTER OF THE</div> <div>      MOLECULAR CRYSTAL</div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 15 ><NOBR><div>  OVER ALL VIEW OF THE CRYSTAL</div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div>  VIEWS OF THE TOP-BASE & SIDES</div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 311 ><NOBR><div> <IMG SRC="100fc51d0.gif" border=0 width="197" height="285" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div> <IMG SRC="1010fd320.gif" border=0 width="253" height="306" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 34 ><NOBR><div> A 3-5-7 FACE CENTERED</div> <div> ORTHO-RHOMBIC CRYSTAL </div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div>  VIEWS OF THE TOP & SIDES</div> <div> OF THE 3-5-7 FACE CENTERED CRYSTAL</div> </NOBR></tD> </tR> <tR> <tD VALIGN=CENTER HEIGHT= 191 ><NOBR><div> <IMG SRC="10308fb00.gif" border=0 width="143" height="176" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </NOBR></tD> <tD VALIGN=TOP WIDTH="263"><div> <IMG SRC="1031a0ba0.gif" border=0 width="160" height="186" ALIGN="BOTTOM" HSPACE="0" VSPACE="0"></div> </tD> </tR> <tR> <tD VALIGN=TOP HEIGHT= 34 ><NOBR><div> A PARA FACE CENTERED</div> <div> ORTHO-RHOMBIC CRYSTAL</div> </NOBR></tD> <tD VALIGN=TOP><NOBR><div>  VIEWS OF THE TOP & SIDES</div> <div> OF THE PARA FACE CENTERED CRYSTAL</div> </NOBR></tD> </tR> </TABLE></div> <bR> </td> </tr></table></body>