百度试题 结果1 题目43. Which element has atoms with exactly four valence electrons in its ground state? C(A)Ca (B) Cr (C) Si(D)S 相关知识点: 试题来源: 解析 C 反馈 收藏
Electronegativity is a property of an element or atom to acquire onto itself the electrons in the bond or the charge density. Thus, in a bond between two atoms, the more electronegative atom will then have a partially negative charge while the less electronegative element will tend...
What are the first 20 elements and their atomic numbers? What does the atomic number of an element represent? Which two elements have the same number of valence electrons? Which atom has the largest number of neutrons? Which chemical element has the symbol Pt?
Which element is expected to have a “sea” of electronsA.HydrogenB.NitrogenC.CobaltD.ChlorineE.Oceanium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,刷题练习的工具.一键将文档转化为在线题库手机刷题,以提高学习效率,
(2) It is now understood that a diet which contains nothing harmful may result in serious disease if certain important element are missing. 人们现在已经懂得,如果饮食中缺少了某些成分,即使其中不含任何有害物质,也会引起严重疾病。 (3) Many laid-off workers become desperate for work, any work, wh...
To determine which element forms an electron-rich hydride, we can follow these steps:Step 1: Understand the Classification of Hydrides Hydrides can be classified into three categories based on their electron configuration: 1. <
Has a -1 charge 3. Has a mass about the same as that of a proton 4. Is att The nucleus of an atom consists of which particles? Name three subatomic particles found in the atom of an element. If an atom has 17 electrons, 20 neutrons, and 19 proto...
aThe glucose oxidase enzyme is used as a biorecognition element: glucose oxidase oxidizes glucose to gluconic acid and shuffles electrons into the oxygen which is dissolved in the solution, and then reduced to hydrogen 葡糖氧化酶酵素使用作为biorecognition元素: 葡糖氧化酶氧化葡萄糖对葡糖酸并且拖曳...
Which second-row element has 6 valence electrons and a valence of 2? What is the most reactive metal in the periodic table? The elements in a column of the periodic table are known as: a. a period b. metalloids c. nonmetals d. a group e. noble gases...
Which element has the lowest ionization energy? What is the electron configuration of calcium, which has 20 electrons? What is the valence electron configuration for the arsenic atom? Does the octet rule only apply to elements belonging to Groups 1, 2, 13 to 18, since ...