堿金屬原子的價(jià)原子具有兩種能態(tài).The valence atom of an alkali - metal atom has two states.所有的堿金屬都在閉合殼層之外有一單個(gè)S電子.All the alkali metals have a single s - electron outside a closed shell.當(dāng)堿金屬光譜顯示出不容懷疑的雙線結(jié)構(gòu)時(shí),是令人驚奇的.It was surprising when th...