[非金属 / 非金屬, fēi jīn shǔ, ㄈㄟ ㄐㄧㄣ ㄕㄨˇ]nonmetal, includes: carbon C 碳, nitrogen N 氮, oxygen O 氧, phosphorus P 磷, sulfur S 硫, selenium S 硒 (and others in some classifications)#38775[Add to Longdo]
[碱金属 / 鹼金屬, jiǎn jīn shǔ, ㄐㄧㄢˇ ㄐㄧㄣ ㄕㄨˇ]alkali metal (the first column of the periodic table, with valency 1), namely: lithium Li 鋰|锂, sodium Na 鈉|钠, potassium K 鉀|钾, rubidium Ru 銣|铷, cesium Cs 銫|铯, francium Fr 鈁|钫#90375[Add to Longdo]
[碱土金属 / 鹼土金屬, jiǎn tǔ jīn shǔ, ㄐㄧㄢˇ ㄊㄨˇ ㄐㄧㄣ ㄕㄨˇ]alkaline earth (i.e. beryllium Be 鈹|铍, magnesium Mg 鎂|镁, calcium Ca 鈣|钙, strontium Sr 鍶|锶, barium Ba 鋇|钡 and radium Ra 鐳|镭)#149668[Add to Longdo]