If it consists of two or more atoms, it is a polyatomicion.
如果它由两个或两个以上的原子,它是一个多原子离子。
The sum of oxidation number values for the atoms in a polyatomicion equals the ion charge.
化合物的氧化数为0,多原子离子中所有元素的氧化数之和等于离子电荷。
The aim of reactive atmosphere process (RAP) is to eliminate the polyatomic molecular/ion impurities with high absorption cross section, at 10.6 μ m in KCl.