symbol for the element iron with atomic mass number and atomic number with two colors,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
Cadmium Cd Chemical Element Icon. Element Of The Periodic Table. Cadmium Symbol With Atomic Number And Atomic Mass.,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
FeCl3. The TiCl4is then reduced with moltenmagnesiumat about 800 °C (1,500 °F) in an atmosphere ofargon, and metallic titanium is produced as a spongy mass from which the excess of magnesium and magnesium chloride can be removed by volatilization at about 1,000 °C (1,800 °F). Th...
百度试题 结果1 题目The element with atomic number 1 is___. A. hydrogen B. oxygen C. nitrogen D. carbon 相关知识点: 试题来源: 解析 A。原子序数为 1 的元素是氢。氧气原子序数为 8,氮气原子序数为 7,碳原子序数为 6。反馈 收藏
SYMBOL Ho ATOMIC NUMBER 67 ATOMIC MASS 164.9303 FAMILY Lanthanide rare earth metal) PRONUNCIATION HOL-me-um Discovery and naming In 1787, a lieutenant in the Swedish army named Carl Axel Arrhenius (1757-1824) was exploring a mine near Ytterby, Sweden. Arrhenius was a "rock ...
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 ...
The element with atomic number 14 is? A. Silicon B. Phosphorus C. Sulfur D. Chlorine 相关知识点: 试题来源: 解析 A。解析:原子序数为 14 的元素是硅元素。磷元素原子序数为 15,硫元素原子序数为 16,氯元素原子序数为 17。所以答案是 A。
What is the abbreviation for hydrogen? A. Hy B. H C. Hd D. Hg 相关知识点: 试题来源: 解析 B。氢元素的英文是 hydrogen,其缩写形式是 H。选项 A“Hy”不是氢元素的正确缩写;选项 C“Hd”一般不是任何化学元素的缩写;选项 D“Hg”是汞元素的缩写。反馈 收藏 ...
What is the abbreviation for chlorine? A. Cl B. Ch C. Cy D. Cg 相关知识点: 试题来源: 解析 A。氯元素的英文是 chlorine,其缩写形式是 Cl。选项 B“Ch”一般不是氯元素的缩写;选项 C“Cy”不是氯元素的缩写;选项 D“Cg”一般不是任何化学元素的缩写。反馈 收藏 ...
James, and Leon O. Morgan (1919- ), discovered a new element, which would eventually be named americium. SYMBOL Am ATOMIC NUMBER 95 ATOMIC MASS 243.0614 FAMILY Actinide Transuranium element PRONUNCIATION am-uh-REE-see-um Americium was first produced in a nuclear reactor. A ...