For these elements, the symbol usually refers to an older name that isn't used anymore. History of the Abbreviations There are eleven element abbreviations that don't seem to match their modern names. Those are subtle reminders of thehistory of the Periodic Tableand the process of the discover...
Twitter Google Share on Facebook chemical symbol (redirected fromElement symbols) chemical symbol [′kem·i·kəl ′sim·bəl] (chemistry) A notation for one of the chemical elements, consisting of letters; for example Ne, O, C, and Na represent neon, oxygen, carbon, and sod...
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2.MathematicsA member of a set. Word HistoryThe symbols that scientists use for the chemical elements are usually abbreviations of the elements' names. Thus the symbol for hydrogen is H, and the symbol for oxygen is O, both from the first letter of the name. But if you look at the Per...
Large amounts of gold are still used in the manufacture of coins, medals, jewelry, and art. Gold also has a number of uses in industry, medicine, and other applications. For example, one radioactive isotope of gold is commonly used to treat cancer. SYMBOL Au ATOMIC NUMBER 79 ATOM...
1.a ductile malleable silvery-white metallic element, very resistant to heat and chemicals. It occurs free and in association with other platinum metals, esp in osmiridium: used in jewellery, laboratory apparatus, electrical contacts, dentistry, electroplating, and as a catalyst. Symbol: Pt; atomi...
lead,metallic chemical element; symbol Pb [Lat.plumbum]; at. no. 82; at. wt. 207.2; m.p. 327.502℃; b.p. about 1,740℃; sp. gr. 11.35 at 20℃; valence +2 or +4. One of the oldest metals used by humanity, lead was known to the ancient Egyptians and Babylonians. The Romans...
百度试题 结果1 题目The symbol for the element gold is ___.相关知识点: 试题来源: 解析 答案:Au 反馈 收藏
百度试题 结果1 题目The symbol for the element gold is ___.相关知识点: 试题来源: 解析 答案:Au 反馈 收藏
Gold swiftly came to be a symbol, and unit, of wealth, and it has maintained this allure through time and around the globe. Several millennia after the Egyptian pharaohs and their tombs of gold, the Aztec Empire's gold riches were plundered by the Conquistadors who sought the valuable metal...