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Nissho Iwai-Nichimen Holding Company (NNHC) is to raise capital by issuing preferred and common stock worth Yen 273bn (USus2.3 1bn) and convertible bonds worth Yen5bn on 15 May, a company source told ACN. The company had originally sought equity financing of Yen200 bn.ACN Group...
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4.【考点2】下列电子式正确的是A.NaH的电子式为Na:HB. N_2 的电子式为NNHC. SiH_4 的电子式为 HSi HHD.H2O的电子式为H*[∶0∶H]
2.全氮阴离子盐是一种新型超高能含能材料,某种全氮阴离子盐结构如图。下列关于该物质的说法正确的是NCrA.属于有机物B.与N2互为同素异形体NNHC.可用于制造炸药D.不含共价键NH30 相关知识点: 试题来源: 解析 2.C【解析】本题主要考查元素周期律的知识,侧重考查学生对基础知识的认知能力。该物质属于铵盐,A项...
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NNHC(NH2)2]2[C6HO2(NO2)3] doi:10.3390/cryst2010034AMINOGUANIDINESODIUMAQUEOUS solutionsHYDROGEN bondingAROMATIC compoundsThe title compound [H2NNHC(NH2)2]2[C6HO2(NO2)3] (2) was prepared in 85% yield by treatment of sodium styphnate with 2 equivalents of aminoguanidinium ...
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百度试题 结果1 题目一nn no nn hc()只()只一□ 相关知识点: 试题来源: 解析 9 10 910 反馈 收藏