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銀被發現的年份和經過
2007-04-24 3:01 am
回答 (2)
2007-04-24 4:47 am
✔ 最佳答案
銀是一種化學元素，化學符號Ag，原子序數47，是一種過渡金屬。銀的化學活性小，價格貴，主要用作錢幣及首飾。為熱、電的良導體，不易受化學藥品腐蝕，在電子工業上是重要的導電材料。質軟，常須加入鎳、銅以增加硬度。
原子量為107.868
原子殼層2,8,18,18,1
軌道4d10
比重10.5
同位數27個
氣化點961.93|2212
發現者Prehistoric
固態
*我已經盡我所能幫你搵了,得咁少ja,
希望幫到你啦*
2007-04-24 7:34 am
銀同金、鐵、銅、鉛等都係人類最先使用的金屬之一，因此經過、年分不可考，只知在青銅器時代中期已出現，古埃及及羅馬便以月亮代表銀、太陽代表金
如果你買張詳細既周期表，佢會有寫發現年分，而銀則是"ancient"
2007-04-23 23:36:25 補充：
Silver has been known since antiquity. It has long been valued as a precious metal and used in currency, ornaments and jewelry, as well as utensils (hence the term silverware).
如果你買張詳細既周期表，佢會有寫發現年分，而銀則是"ancient"
2007-04-23 23:36:25 補充：
Silver has been known since antiquity. It has long been valued as a precious metal and used in currency, ornaments and jewelry, as well as utensils (hence the term silverware).
收錄日期: 2021-04-12 22:26:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070423000051KK03368