A. The number of protons B. The number of neutrons C. The number of electrons D. The sum of protons and neutrons 相关知识点: 试题来源: 解析 A。原子序数由质子数决定。选项 A 正确,原子序数等于质子数。选项 B 中子数不能决定原子序数。选项 C 电子数在原子呈电中性时等于质子数,但不是决定原...
百度试题 结果1 题目What is the atomic number of an element?ps:Please answered in English 相关知识点: 试题来源: 解析 最佳答案译文,什么是元素的原子序数?It is the number of an element in thePeriodic table of the elements.反馈 收藏
百度试题 结果1 题目What is the atomic number of carbon? A. 6 B. 8 C. 12 D. 14 相关知识点: 试题来源: 解析 A。解析:碳的原子序数是6。选项B,8是氧的原子序数。选项C,12是碳的相对原子质量。选项D,14是硅的原子序数。反馈 收藏
百度试题 结果1 题目2.3. What is the atomic number of Fe? A. 26 B. 56 C. 28 D. 58 相关知识点: 试题来源: 解析 A 反馈 收藏
What is the atomic number?Atoms:Atoms are the basic unit of matter. Each atom has a dense nucleus composed of neutrons and protons. It also has a less dense outer electron cloud. Neutral atoms contain the same number of protons and electrons, which are positively and negatively charged, ...
What is the atomic number of this helium atom? A neutral atom must have equal numbers of protons and electrons, so the atomic number of an element also gives the number of electrons. Helium has 2 protons, so its atomic number is 2. Atoms are neutrally charged, so what links atomic ...
声明: 本网站大部分资源来源于用户创建编辑，上传，机构合作，自有兼职答题团队，如有侵犯了你的权益，请发送邮箱到feedback@deepthink.net.cn 本网站将在三个工作日内移除相关内容,刷刷题对内容所造成的任何后果不承担法律上的任何义务或责任
What is the atomic number of antimony?Antimony and Stibium:The chemical symbol for antimony is Sb, an unusual abbreviation using none of the letters in the elements name. This is common for elements known to different ancient civilizations. While the name antimony comes from Greek, the chemical...
The atomic number of each element, which is the number of protons in its nucleus, appears next to its symbol in the table. If the atomic number wasn't there, you could still tell how many protons were in the nucleus of a given element by counting the number of places between that ...
How do determine the mass number of the element U not the atomic mass? The atomic number of an atom of an element is 17 while its mass number is 35. How many neutrons does the atom have? How do you find the atomic mass of an element?