| 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 |
| 价层 | [jià céng, ㄐㄧㄚˋ ㄘㄥˊ, 价层 / 價層] valency shell (outer electron shell on an atom determining its chemical properties) |
| 价电子 | [jià diàn zǐ, ㄐㄧㄚˋ ㄉㄧㄢˋ ㄗˇ, 价电子 / 價電子] valency electron; outer shell of electrons |