化学问题~~ what is the number of electrons in an atom of scandium that have an l quantum number of 1? a.1 b.3 c.4 d.6 e.12 答案是选e 为什么e是正确的?有 公式计算吗? 答案 当然是12了,因为Sc的电子排布为1s2 2s2 2p6 3s2 3p6 4s2 3d1,角量子数为1的时候是p电子,Sc中p电子有...
the number of electrons in an atom我应该怎么回答?题目有给出些元素和他们的原子序数 相关知识点: 试题来源: 解析 对中性原子来说,电子数等于电子序数.对离子来说,原子序数等于电子数加电荷数(阳离子)或电子数减电荷数(阴离子). 分析总结。 对离子来说原子序数等于电子数加电荷数阳离子或电子数减电荷数阴离...
What is the maximum number of electrons in an atom that can have the following quantum numbers?(a) n = 2; (b) n = 3 and ,= 1; (c) n = 3,,= 1,and m,= 0; (d) n = 3, ,= 1,m,= −1,and ms = −1/2.
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...
百度试题 结果1 题目 The maximum number of electrons that an atom can have in a principal level n is to use the formula n2. 相关知识点: 试题来源: 解析 错误 反馈 收藏
1. The Elements and The Periodic Table(元素和周期表) The number of protons in the nucleus of an atom is referred to as the atomic number, or proton number, Z. The numbers of electrons in an electrically neutral atom is also equal to the atomic number, Z. The total mass of an atom ...
An atom s formal charge is the difference between the number of valence electrons in an isolated atom and the number of electrons assigned to that atom in a Lewis structure. 参考答案:对 点击查看答案&解析
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 number of unpaired electrons in the outer subshell of a {eq}S {/eq} atom is a) {eq}0 {/eq} b) {eq}1 {/eq} c) {eq}2 {/eq} d) {eq}3 {/eq} e) None of these. Electronic Configuration of Elements: The electronic configuratio...
(1) Atoms and Electrons (2) The Atom and the Bohr Theory of its Structure: an Elementary PresentationSCIENCE is steadily becoming severely specialised. The proportion of amateurs (in the restricted sense of the word) among original workers of all ranks decreases slowly but surely....