The change of the nature of the elements of the same period and the same main group.
Applicable Academic Stage：
Senior high school Chemistry
(1) Deepen the understanding of the law of the change of the nature of the elements of the same cycle and the same main group. (2) Understand the important role of the periodic table of elements and the periodic law of elements in learning the knowledge of elemental compounds.
The change of the nature of the elements of the same period and the same main group.
Experimental Instrument
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