溴者,化學元素也,符號Br,原子序三十五,屬鹵素。色紅,略溶於水,性不穩。有毒。常溫者液態,故作水部,又因臭味而名溴。
百餘元素中,常溫液態者僅二,其一為溴,另一為汞。
同位素者四十五,自溴六七至溴九七。性穩者有二,曰溴七九,曰溴八一。以溴七九為盛。
欲得之,須以氯通過含溴之鹵水。
實驗室中小量得之,則用溴化鈉並濃硫酸可得。
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