" [Professor] Bragg [asserts that] In sodium chloride there appear to be no molecules represented by NaCl. The equality in number of sodium and chlorine atoms is arrived at by a chess-board pattern of these atoms; it is a result of geometry and not of a pairing-off of the atoms. "
― Henry Edward Armstrong
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![Henry Edward Armstrong quote : [Professor] <a href=](/image/1104439.jpg "Bragg")
Bragg [asserts that] In sodium chloride there appear to be no molecules represented by NaCl. The equality in number of sodium and chlorine atoms is arrived at by a chess-board pattern of these atoms; it is a result of geometry and not of a pairing-off of the atoms." style="width:100%;margin:20px 0;"/>