All alkaline earth elements have an oxidation number of +2, making them very reactive. Because of their reactivity, the alkalinemetals are not found free in nature.
所有的碱土金属元素的化合价都是+2，这使他们非常活泼，因为他们非常活泼，也不在自然界中直接出现。
2
The subject matter of this invention is a method for preparing metallic dihydroxybenzenedisulfonates, preferably from alkalinemetals, from corresponding dihydroxybenzenedisulfonic acids.
本发明的主题是由相应的二羟基苯二磺酸制备二羟基苯二磺酸金 属盐、优选二羟基苯二磺酸碱金属盐的方法。
3
The main existence of transition metals in highest oxidation state complex in crystalloid and alkaline medium and reaction activation center has been reviewed with 63 references.