silicon element with atomic number and mass number vector illustration,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、
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
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
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。
Holmium occurs with other rare earth elements in minerals such as monazite and gadolinite. It can now be separated from other rare earth elements somewhat easily. But no major uses have been found for it or its compounds. SYMBOL Ho ATOMIC NUMBER 67 ATOMIC MASS 164.9303 FAMILY ...
A. Atomic number B. Mass number C. Electron configuration D. Chemical properties 相关知识点: 试题来源: 解析 B。同位素之间的主要区别在于质量数。原子序数决定元素种类,同位素的原子序数相同,所以 A 选项错误。电子构型在同位素中基本相同,C 选项错误。同位素的化学性质相似,D 选项错误。质量数等于质子数加中...
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 ...
Atomic & Mass Number | Overview & Difference from Chapter 2 / Lesson 1 403K What is atomic number, mass number and atomic mass? Learn what atomic number, mass number and atomic mass represent. See the concept mass number vs atomic mass. Related...
2 This question is about hydrogen, the element with atomic number Z =1.(a)(i) Hydrogen has two stable isotopes, H and H. Complete the table to show the number of subatomic particles present in the nuclei of these two isotopes of hydrogen.(1)Isotope Number of protons Number of neutrons...