Periodic Properties of the Elements 元素的周期律 ; 元素性质的周期性
Arsenic sits right beneath phosphorus in the periodic table of the elements and shares many of its chemical properties.
在元素周期表中，砷就位于磷的下面，二者具有很多相同的化学性质。
We have a table of the elements with properties varying periodically with atomic mass, so we compress all of that information and refer to it as the Periodic Table.
我们有一个元素表，其中的元素的特性，随着原子质量的改变而引起周期性的变化，所以我们将所有的信息精简，将它变成一个周期表。
This course concentrates on the chemistry of non-transition elements and their compounds, with emphasis on symmetry, bonding, periodic properties and the descriptive chemistry of selected groups.
本课程集中研究化学中的非过渡元素及其化合物，并强调其对称，结合，周期性及性质的描述。
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