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...
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子反馈 收藏
What is the maximum number of electrons in an atomthat 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.相关知识点: ...
What changes when an ion is made from an atom? A. the number of electrons only B. the number of neutrons only C. the number of protons only D. the number both of protons and of neutrons 相关知识点: 试题来源: 解析 A 考查实际运用。A. 仅电子数量(变化),B. 仅中子数量(变化),C. ...
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 ...
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
To determine the number of d-electrons in Mn2+ and find which element has the same number of d-electrons, we can follow these steps: Step 1: Determine the atomic number of manganese (Mn)Manganese has an atomic number of 25. This means a neutral manganese atom has 25 electrons. Step 2...
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
百度试题 题目As we known,electrons revolve about the___of an atom.众所周知,电子围绕原子核。相关知识点: 试题来源: 解析 nucleus,or center, 反馈 收藏