| 碱性金属 | [jiǎn xìng jīn shǔ, ㄐㄧㄢˇ ㄒㄧㄥˋ ㄐㄧㄣ ㄕㄨˇ, 碱性金属 / 鹼性金屬] 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 |
| 碱金属 | [jiǎn jīn shǔ, ㄐㄧㄢˇ ㄐㄧㄣ ㄕㄨˇ, 碱金属 / 鹼金屬] 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 |
| 铯 | [sè, ㄙㄜˋ, 铯 / 銫] cesium Cs, alkali metal 鹼性金屬|碱性金属 with atomic number 55 |
| 钫 | [fāng, ㄈㄤ, 钫 / 鈁] francium Fr, unstable alkali metal 鹼性金屬|碱性金属 with atomic number 87, disintegration product of actinium 錒|锕 |
| 锂 | [lǐ, ㄌㄧˇ, 锂 / 鋰] lithium Li, alkali metal 鹼性金屬|碱性金属 with atomic number 3 |