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...
Written and fact-checked by The Editors of Encyclopaedia BritannicaThe single most important characteristic of an atom is its atomic number (usually denoted by the letter Z), which is defined as the number of units of positive charge (protons) in the nucleus. For example, if an atom has a...
The atomic number (原子序数) is equal to the number of electrons per atom or, what is equivalent, the number of protons (质子) per nucleus.相关知识点: 阅读 文言文阅读 文言题类 文言文阅读——翻译 试题来源: 解析 [答案]原子序数等于每个原子的电子数或者相当于每个原子核的质子数。反馈...
The atomic number of an atom is:A.the number of electronsB.the number of neutronsC.the number of protonsD.the number of protons plus the number of neutrons的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工
Atoms – Nucleus (3) Atomic Mass Unit (amu) – Unit used to measure the relative masses of subatomic particles; A proton has a mass of 1 amu. (4) Atomic Number – Indicates the number of protons found in the nucleus of an atom. Atoms – Nucleus Neutrons – Neutral charge (1) ...
24.The atomic number of carbon is six.How many electrons(电子)doesone atom of carbon have?A.Two.B.Four.C.Six.D.Twelve.24.The atomic number of carbon is six. How many electrons(电子)does one atom of carbon have? A.Two. B. Four. C.Six. D.Twelve. 相关知识点: 试题来源: 解析...
The atomic number of a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the ...
Describe the structure of an atom.An atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines
The atom with lowest atomic number and a completely filled 3d subshell in the ground state is A. Cu B. Ar C. Cr D. Zn 如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: A 复制 纠错 举一反三 传输速率能达1GBit/s的最低类别双绞线...
The atomic number(原子序数)is equal to the number of electrons per atom or, what is equivalent, the number of protons per nucleus(原子核).