The periodic table can not only depiet the objecive law of the element periodic law quite well, but also fully reprcsent main group element in close relationship with subgroup clement, thus expressing the duality of cach element.
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美
- 該表不僅能很好地反映出元素周期律的客觀(guān)規律,而且能充分地體現出主族元素和副族元素之間的密切聯(lián)系,從而表達出每個(gè)元素的兩重性。
