百度试题 结果1 题目8. How many valence electrons does a silicon atom have?A) 1 D B) 2C) 3D) 4 相关知识点: 试题来源: 解析 D 反馈 收藏
If there are 5 electrons in the outer shell of an atom, how many bonds can it make with hydrogen? Also, can hydrogen exist with one electron in the outer shell? How many electrons are there in the innermost electron shell in an atom? Chlorine has an atomic ...
<p>To determine how many electrons are present in an atom with an atomic number of 20 and a mass number of 42, we can follow these steps:</p><p>1. <strong>Understand the Atomic Number</strong>: The atomic number of an element is defined as the number of
How many valence electrons does flourine have? How many electrons are there in the third shell of sodium, na (atomic number 11)? How many non-bonding electrons are present on the indicated atom? How many electrons can the innermost shell of an atom have? How many valence electrons does ...
一个中性的氟原子含有几个电子？
考点分析：求subshell和quantum shell里electrons的数量 题目分析：3p轨道有3个，每个可以接纳2个电子，所以一共可以接纳6个电子，第3层一共可以接纳18个电子，答案选D。3 题目：The diagram shows the first ionisation energy for the elements from sodium to silicon.What is the approximate first ionisation ...
The Born–Oppenheimer approximation is the keystone of modern computational chemistry and there is wide interest in understanding under what conditions it remains valid. Hydrogen atom scattering from insulator, semi-metal and metal surfaces has helped pr
How many electrons in the ground state of a Hg atom can have the quantum number ml = +1? The way I am trying to figure this out is as follows.. Electron configuration for HG is.. [Xe]6s^2 5d^10 n=6 l : ml 0: 0 1: -1,0,1 ...
Which statements help to explain this trend from sodium to aluminium? 1 The charge on the metal ion increases. 2 There are more delocalised electrons per metal ion. 3 The radius of the metal ion decreases. 36 Under room conditions, 600 3 cm of a gas, X, has a mass of 0.700 g. ...
The hydroxide ion, OH−, has a total of 9 protons. How many neutrons and electrons are there in this ion? 题目难度:容易 考点分析:求neutrons,electrons和protons之间的关系 题目分析:hydroxide ion有9个protons,带负一价电,所以electrons数量比protons多一个,为10个,立马就把答案B给选出来了。O有8个...