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
百度试题 结果1 题目The reaction is Fe + CuSO₄ = FeSO₄ + Cu. What is the valence of copper in CuSO₄? A. +1 B. +2 C. D. -2 相关知识点: 试题来源: 解析 B。在 CuSO₄中,硫酸根显-2 价,铜元素显+2 价。反馈 收藏 ...
In the reaction 2Mg + O₂ = 2MgO, what is the valence of oxygen in MgO? A. -2 B. +2 C. D. +1 相关知识点: 试题来源: 解析 A。在 MgO 中,镁元素通常显+2 价,根据化合物中正负化合价代数和为零,可算出氧元素显-2 价。反馈 收藏 ...
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 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: C 复制 纠错举一反三 逆向思维属于哪种创新思维?() A. 逻辑思维 B. 发散思维 C. 直觉思维 D....
“Valency is the combining capacity of an atom.” “The electrons present in the outermost shell of an atom are known as the valence electrons.” The valency of iron in ferrous sulfate: Iron in its +2 oxidation state and sulfate ions make up the chemical compound known as ferrous sulfate....
In the reaction 2Al + 3H₂SO₄ = Al₂(SO₄)₃ + 3H₂, what is the valence of sulfur in H₂SO₄? A. +6 B. +4 C. +2 D. -2 相关知识点: 试题来源: 解析 A。在 H₂SO₄中,氢元素显+1 价,氧元素显-2 价,根据化合物中正负化合价代数和为零,可算出硫元素显+6...
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 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: B 复制 纠错 举一反三 标桩颜色:路徽喷成红色,其他文字和符号喷黑色油漆,标体为()油漆。 查看完整...
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...
Valence refers to the ability of atoms to combine, while valency is the number of electrons involved in bonding.
Valency is the combining capacity of the elements to form compounds. During the formation of the molecules of the compounds, atoms combine in certain fixed proportions. Visit BYJUS to learn more about it.