铍是轻金属元素 ,又是稀有元素 ,人们对它还不太熟悉。有意思的是铍的化合物还有点甜味。铍是毒性最强的金属元素之一。据研究 ,每一立方米的空气中只要含有一毫克的铍尘 ,便能使人马上得急性肺炎 ,而且死亡率相当高。国外有关铍中毒的报道很多 ,例如 ,美国的马萨诸塞州荧光灯 Radon is a light metal element and a rare element. People are not yet familiar with it. What’s interesting is that the wolfberry’s compound has a bit of sweetness. Radon is one of the most toxic metal elements. According to research, as long as one milligram of silica dust is contained in each cubic meter of air, people can get acute pneumonia immediately and the mortality rate is quite high. There are many reports of cesium poisoning in foreign countries, for example, the Massachusetts fluorescent lamps in the United States.