This reference guide has arranged the key facts about chemical elements in a systematic, practical format. All numerical data is given in SI units, together with a key chapter which explains them and illustrates how to convert to other units. A variety of information is provided on each element, including its origin and discovery, chemical properties, environmental abundance, thermodynamics, physical properties, biological activity, atomic spectra and oxidation states.

退換貨說明：

會員均享有10天的商品猶豫期（含例假日）。若您欲辦理退換貨，請於取得該商品10日內寄回。

辦理退換貨時，請保持商品全新狀態與完整包裝（商品本身、贈品、贈票、附件、內外包裝、保證書、隨貨文件等）一併寄回。若退回商品無法回復原狀者，可能影響退換貨權利之行使或須負擔部分費用。