1-20号元素的性质及用(国外英文资料).docVIP

1-20号元素的性质及用(国外英文资料) hydrogen Hydrogen is the number one element in the periodic table, and the element name comes from Greek, meaning water element. Hydrogen was discovered in 1766 by British chemist cavendish, who called it a combustible air and proved that it was burning in the air to generate water. In 1787 the French chemist, Lavoisier, proved that hydrogen was a single substance and named it. Hydrogen is high in the earths crust, accounting for 15.4% of the atom, but only 1% of the weight. Hydrogen is the richest element in the universe. On earth, hydrogen is mainly used in water and org