碱金属

Francium is the densest of the Alkali Metals and also radioactive.

钫是中密度最大的,具有放射性。

Based on the characteristics of biomass fuel, this article summarizes the sources of alkali metals in biomass and the elutriation and migration.

摘要在明确了生物质燃料特点的基础上，对生物质中元素的来源和析出迁移规律进行了概述。

This review summaries the application of ion exchangers in the separation and determination of alkali metals, alkali-earth metals, noble metals, rare earth elements and actinoid.

离子交换剂在萃取色谱中得到了广泛的应用，本文详细结了离子交换剂在分析化学中用、土、贵、土元素、锕系元素等的分离与测定。

Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.

结果表明硫化铋只能氢卤酸（除氢氟酸外）、硫酸与卤化物的混合液中，不能硫酸中。

When two different metals are placed in a fused alkali or alkaline-earth chloride bath, the more readily corrodible metal will deposit on the less corrodible one.

当两种不同的放在熔融的或土氯化物盐浴中时,较易腐蚀的会沉积在较难腐蚀的上。

It is studied further that the dissolubility of the bismuthous sulfide in the solutions of the non-oxidative strong acid through the experiment by means of chemical thermodynamics.

运用化学热力学基础理论和方法研究了硫化铋在无氧化性强酸和可性卤化物液中的解性。

Abstract : When two different metals are placed in a fused alkali or alkaline-earth chloride bath, the more readily corrodible metal will deposit on the less corrodible one.

摘要 ： 当两种不同的放在熔融的或土氯化物盐浴中时,较易腐蚀的会沉积在较难腐蚀的上。