According to the periodic table, according to the physicochemical properties of the elements, the elements can be classified as noble gas elements (including He, Ne, Ar. Kr. Xe, and Rn, a total of 6 bins, non-metallic elements (including B, C, Si, N). , P, As, 0, S, Se, Te, F, Cl, Br. I. At and H, Altogether 16 and the metal element Kiyon's shadow
In general, metal elements can be classified into two major categories according to their appearance characteristics, namely ferrous metals and non-ferrous metals. The ferrous metal elements include Fe, Cr and Mn, and the rest of the metal elements are called non-ferrous metal elements. Since Fe is most widely used in ferrous metals, it is customary that non-ferrous metal elements are also referred to as non-ferrous metal elements.
Non-ferrous metal elements can be divided into ordinary metal elements (including A1, Mg, Na, Cu, Pb rhyme, precious metal elements (including Au, Ag, Ru, Rh and rare metal elements (including Be, Sc, and Po.Zr surveyed three major categories. Actually, this method of partitioning is relatively crude. Some non-metallic elements are intermetallic Si. Se, Te. As. B) the nature of the metal and non-metal Between, sometimes also included in the non-ferrous alloy elements.
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