The elements of group V A include three nonmetals — nitrogen, phosphorus, and arsenic—and two metals — antimony and bismuth.
集团外语由一个非金属、碳、两个非金属等、硅和锗，和两个金属、锡、铅。
The elements of group V A include three nonmetals — nitrogen, phosphorus, and arsenic—and two metals — antimony and bismuth.
集团外语由一个非金属、碳、两个非金属等、硅和锗，和两个金属、锡、铅。
应用推荐