What is the abbreviation for silicon? A. Si B. Sy C. Sg D. Sn 相关知识点: 试题来源: 解析 A。硅元素的英文是 silicon,其缩写形式是 Si。选项 B“Sy”不是硅元素的缩写;选项 C“Sg”一般不是任何化学元素的缩写;选项 D“Sn”是锡元素的缩写。反馈 收藏 ...
What is the abbreviation for phosphorus? A. P B. Ph C. Po D. Py 相关知识点: 试题来源: 解析 A。磷元素的英文是 phosphorus,其缩写形式是 P。选项 B“Ph”一般不是磷元素的缩写;选项 C“Po”是钋元素的缩写;选项 D“Py”不是磷元素的缩写。反馈 收藏 ...
What is the abbreviation for calcium? A. Ca B. Cy C. Cg D. Ch 相关知识点: 试题来源: 解析 A。钙元素的英文是 calcium,其缩写形式是 Ca。选项 B“Cy”不是钙元素的缩写;选项 C“Cg”一般不是任何化学元素的缩写;选项 D“Ch”一般不是钙元素的缩写。反馈 收藏 ...
What is the abbreviation for magnesium? A. Mg B. Mn C. My D. Mh 相关知识点: 试题来源: 解析 A。镁元素的英文是 magnesium,其缩写形式是 Mg。选项 B“Mn”是锰元素的缩写;选项 C“My”不是镁元素的缩写;选项 D“Mh”不是镁元素的缩写。反馈 收藏 ...
Atomic Numbers: An element's atomic number directly correlates to the number of protons located in the nucleus of its atoms. In fact, the number of protons in the nucleus is the defining characteristic by which an atom is assigned its element. ...
Californium chemical element Sign with atomic number and atomic weight Periodic Table Element,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联想、奥美
Strontium, chemical element, one of the alkaline-earth metals of Group 2 (IIa) of the periodic table. It is the principal health hazard in radioactive fallout.
Anempirical formula consists of symbols representingelementsin acompound, such as Na forsodiumand Cl forchlorine, and subscripts indicating the relative number ofatomsof eachconstituentelement. (A subscript is not used, however, unless the number is more than one.) Thus,benzeneis represented by the...
度全不近集它较西取即新身行定例道度全不近集它较西取即新身行定例道The chemical element with the atomic number 1 is ___
Element Properties atomic number41 atomic weight92.906 melting point2,468° C (4,474° F) boiling point4,927° C (8,901° F) specific gravity8.57 (20° C) oxidation states+2, +3, +4, +5 electron config.[Kr]4d45s1 The Editors of Encyclopaedia Britannica ...