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sodium hydrosulphide keywords to promote role
time2012/03/01
sodium hydrosulphide keywords to promote role
1923, the International Atomic Weight Committee decision: the chemical elements according to how much of the nucleus charge of atom classification of a way to the same class of the nuclear charge number of atoms called an element.
sodium hydrosulphide, also known as chemical elements, refers to more than one hundred kinds of basic metals and non-metallic material in nature, they are only from one atom in each nucleus of its atoms with the same number of protons, with the general chemical methods can not make decomposition, and can constitute all the material. Some examples of common elements hydrogen, nitrogen and carbon. Until 2007, a total of 118 kinds of elements are found, of which 94 species exist on Earth.
1923, the International Atomic Weight Committee decision: the chemical elements according to how much of the nucleus charge of atom classification of a way to the same class of the nuclear charge number of atoms called an element.
sodium hydrosulphide, also known as chemical elements, refers to more than one hundred kinds of basic metals and non-metallic material in nature, they are only from one atom in each nucleus of its atoms with the same number of protons, with the general chemical methods can not make decomposition, and can constitute all the material. Some examples of common elements hydrogen, nitrogen and carbon. Until 2007, a total of 118 kinds of elements are found, of which 94 species exist on Earth.