The mass number of argon is 40.How many protons, neutrons and electrons are there in an argon atom? ( ) 相关知识点: 试题来源: 解析 一个氩原子有 18 个质子、22 个中子和 18 个电子。 1. 原子序数: 氩的原子序数为 18,这意味着它的原子核中有 18 个质子。 2. 质量数: 氩的质量数为 40...
几道英语化学题!1.how are the atomic numbers and the atomic masses of the elements related to how the elements are arranged on the periodic table?2.how does the number of electrons relate to the arrangement what is the different in the number o
1.how are the atomic numbers and the atomic masses of the elements related to how the elements are arranged on the periodic table?2.how does the number of electrons relate to the arrangement what is the different in the number of electrons in a 3rd period element and the 2nd period ...
The single most important characteristic of an atom is its atomic number (usually denoted by the letter Z), which is defined as the number of units of positive charge (protons) in the nucleus. For example, if an atom has a Z of 6, it is carbon, while a Z of 92 corresponds to ...
百度试题 结果1 题目24. The atomic number of carbon is six. How many electrons (电子) does one atm of carbon have? A. Tv B. Four. C. Six. D. Twelve. 相关知识点: 试题来源: 解析 21∼27ADCBDD优质解答 反馈 收藏
24.The atomic number of carbon is six.How many electrons(电子)doesone atom of carbon have?A.Two.B.Four.C.Six.D.Twelve.24.The atomic number of carbon is six. How many electrons(电子)does one atom of carbon have? A.Two. B. Four. C.Six. D.Twelve. 相关知识点: 试题来源: 解析...
Question: An atom whose atomic number is 7 has how many electrons in its outermost energy level?FiveSevenTwoThree There are 2 steps to solve this one.
Besides their excellent strength-to-weight ratio, they are attractive for their high resistance when exposed to corrosive environments, owing to the oxide barriers formed on their surface. These films are very dense and only a few nanometers thick, while their bond to the bulk metal beneath is...
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