结果1 题目The reaction is CaO + H₂O = Ca(OH)₂. What is the valence of calcium in Ca(OH)₂? A. +1 B. +2 C. D. -2 相关知识点: 试题来源: 解析 B。在 Ca(OH)₂中,氢氧根显-1 价,钙元素显+2 价。反馈 收藏
What is the valence of tellurium?Valency of an Atom:The valency of an atom represents its ability to combine with other atoms. The valency of an atom is the number of electrons gained or released by an atom to satisfy the octet rule. Hence, the electron configuration plays a significant ...
What is the valence shell? The Structure of an Atom: Atoms have several characteristic parts, namely a nucleus of protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons are neutral, and electrons have a negative charge. ...
MaterialsPage2of14Question1What is the valence number ofthe following elements:-AluminiumAnswerChlorine:AnswerArgon:Answer(3marks)Question2Are the following statementstrueor false(tick the relevant box).TRUEFALSE1The atom exists in its mostunstableconfiguration when its outermost shellis completely filled...
The outermost shell is called valence shell and it can never have more than 8 electrons in any atom.
What is the valence electron number of the carbonate ion? A. 22 B. 23 C. 24 D. 25 如何将EXCEL生成题库手机刷题 > 下载刷刷题APP,拍照搜索答疑 > 手机使用 分享 反馈 收藏 举报 参考答案: C 复制 纠错 相关题目: 以下哪一项不是服务器具备的能力(___)? A. 高速CPU运算能力 B. 长...
What is valency? How many valence electrons does chromium have? How many electrons does chromium have? What is the chemical element chromium? What is the oxidation number of the chromium atom in K2CrO4 ? What is the atomic number of chromium? What is the valency of oxygen? What is the val...
View Solution 10gof a sample of a mixture ofCaCl2andNaClis treated to precipitate all the calcium asCaCO3. ThisCaCO3is heated to convert all theCatoCaOand the final mass ofCaOis 1.62 g.The percent by mass ofCaCl2in the origial mixture is ...
What is the valence electron number of nitrogen trifluoride? A. 25 B. 26 C. 27 D. 28 如何将EXCEL生成题库手机刷题 > 下载刷刷题APP,拍照搜索答疑 > 手机使用 分享 反馈 收藏 举报 参考答案: B 复制 纠错举一反三 安全监控装备,应不定期进行检查、维护和校验,保持其正常运行。 A. 正确 B....
Valence refers to the ability of atoms to combine, while valency is the number of electrons involved in bonding.