The Periodic Table of Elements: Element Name Origins (元素周期表每个元素名称的来源,大图请戳http://t.cn/R5Xhzsk)
More so than any of the other major groups of elements in the periodic table, the transition metals have shaped human history and have been the workhorses of industry. The discovery of metallic copper ended the Stone Age and ushered...
15 Rubidium is an element in Group I of the Periodic Table. Which one of the following statements about rubidium is incorrect? D A Rubidium has a low density. B Rubidium is soft and can be cut with a knife.C Rubidium reacts explosively with water to form an alkaline solution.D Rubidium...
In the periodic table, there is an element whose English name starts with 'H' and it is the lightest element. What is its chemical symbol? A. He B. H C. Hg D. Ho 相关知识点: 试题来源: 解析 B。解析:英文名称以'H'开头且是最轻的元素是氢(Hydrogen),其化学符号是H。He是氦(Helium)...
Element Scandium of the Periodic Table,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、盛世长城、百度、360、招商银行、工商银行等数万家企业级
In subsequent years, I have become a consultant to the mining industry and traveled extensively in South America to different mines and have not seen anything like them there either. I have sent this out to a few of my copper industry friends and other contacts to see if they have ...
A. the number of protons an element has B. the number of neutrons an element has C. the number of electron shells an element has D. the number of E. lectrons an element has 相关知识点: 试题来源: 解析 C。解析:The periods represent the number of electron shells an element has.反馈...
Element Copernicium of the Periodic Table,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、盛世长城、百度、360、招商银行、工商银行等数万家企业
21 Element X is in Group ll of the Periodic Table.Which statements about X are correct? A1 X is a metal.2 X has two electrons in its outer shell.3 X is a liquid at room temperature. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3 相关知识点: 试题来源:...
百度试题 结果1 题目19 Which element is in the same period of the Periodic Table as silicon? C A germanium B scandium C sodium D strontium 相关知识点: 试题来源: 解析 C 反馈 收藏