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4215℃！已知世界上熔点最高的物质由它构成
铪，金属Hf，原子序数72，原子量178.49，是一种带光泽的银灰色的过渡金属，有6种天然稳定同位素。铪不与稀盐酸、稀硫酸和强碱溶液作用，但可溶于氢氟酸和王水。铪合金（Ta4HfC5）是已知熔点最高的物质（约4215℃）。
化学元素控64/123
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