百度试题 结果1 题目The atomic number of an element represents the number of ___. A. protons B. neutrons C. electrons D. protons and neutrons 相关知识点: 试题来源: 解析 A。元素的原子序数代表质子数(protons)。反馈 收藏
A. the number of protons in an atom B. the number of neutrons in an atom C. the number of electrons in an atom D. the total number of particles in an atom 相关知识点: 试题来源: 解析 A。元素的原子序数告诉我们一个原子中的质子数。原子序数等于质子数,选项 B 中子数不能由原子序数确...
百度试题 结果1 题目What is the atomic number of an element?ps:Please answered in English 相关知识点: 试题来源: 解析 最佳答案译文,什么是元素的原子序数?It is the number of an element in thePeriodic table of the elements.反馈 收藏
1The atomic number of an element X is 15.The number of electrons in an anion of X is?答案是D,但是eleltrons不是等同atomic number吗?A 10B 12C 15D 18 2The atomic number of an element X is 15.The number of electrons in an anion of X is?但是eleltrons不是等同atomic number吗?A 10B...
Atoms of an element are all the same in terms of shape and size and atoms of different elements differ in size and shape. Elements are characterised by mass of their atoms so all the atoms of an element have identical weight. Different elements have atoms of different atomic weight. Atoms ...
The atomic mass or atomic weight of an element (or put it in simple term, mass of an atom) is found by addingnumber of neutronsand number of protons. In calculating the atomic mass of an atom, the number of electrons and daltons are usually ...
The atomic number of a chemical element is counted by the number of ( ) that the atom contains .A.electronsorprotonsB.electronsplusprotonsC.nucleusD.neutrons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
3 The atomic number of element X is 16. Which statement(s) concerning X is/are correct?I. X can react with calcium to form an ionic compound.II. The oxide of X dissolves in water to form an acidic solution.III. X can conduct electricity in its molten state. A I and ll only B ...
百度试题 结果1 题目An element is a substance all of _ atoms have the same atomic number. () A. that B. whose C. what D. which相关知识点: 试题来源: 解析 B 反馈 收藏
An element is a substance all of _ atoms have the same atomic number.A.thatB.whoseC.w