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Waveform Audio File Format  |  2002-11-21  |  2.4 MB  |  1 channel  |  11,025 sample rate  |  1 minute, 54 seconds
Transcription: Here's the complete periodic table that you built up in the program on chemical periodicity. During that building process, the different blocks of elements emerged quite naturally. At the extreme ends of the table are the eight columns of typical elements. Two columns to the left and six columns to the right. From these came your first small 20 element table. The typical elements to the right are connected to those on the left by three other blocks of elements. First, there are the four rows of transition elements. Then comes the row of 14 lanthanides and immediately beneath it the row of 14 a ...