百度试题 结果1 题目The atomic number of an element represents the number of ___. A. protons B. neutrons C. electrons D. protons and neutrons 相关知识点: 试题来源: 解析 A。元素的原子序数代表质子数(protons)。反馈 收藏
A. the number of protons in an atom B. the number of neutrons in an atom C. the number of electrons in an atom D. the total number of particles in an atom 相关知识点: 试题来源: 解析 A。元素的原子序数告诉我们一个原子中的质子数。原子序数等于质子数,选项 B 中子数不能由原子序数确...
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
[translate] aThe atomic mass of an element indicates how heavy, on average, an atom of an element is when compared to an atom of another element 元素的原子质量表明多么重,平均,元素的原子是,当与另一个元素时原子比较[translate]
The atomic number of an element X is 15.The number of electrons in an anion of X is?答案是D,但是eleltrons不是等同atomic number吗?A 10B 12C 15D 18 答案 atomic number of an element 指的是:元素X的原子序数是15,核外有15个电子,所以该元素为P元素,即磷元素而number of electrons in an anio...
How does the element definition relate to the atomic number? Solution Step 1 Solution:− Theatomicnumberofanelement, represented by the symbol(Z), is fundamental to the definition and identity of the element. View the full answer
The atomic number indicates ___. A. the number of neutrons in a nucleus B. the total number of neutrons and protons in a nucleus C. the number of protons or electrons in a neutral atom D. the number of atoms in 1 g of an element E. the ...
What element has the atomic number 74?Numbered Mass:The atomic number of an element refers to the number of protons/electrons located in the nucleus of an atom of that element. The atomic mass is the sum of the number of protons and the number of neutrons....
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
百度试题 结果1 题目4 The diagram shows the atomic structure of an element X.e key eP proton nn eelectron PXnXp Pn neutron nXpXn ee What is X? B A aluminium B beryllium C boron D fluorine 相关知识点: 试题来源: 解析 B 反馈 收藏 ...