百度试题 结果1 题目43. Which element has atoms with exactly four valence electrons in its ground state? C(A)Ca (B) Cr (C) Si(D)S 相关知识点: 试题来源: 解析 C 反馈 收藏
An ion has a mass number of 65, 36 neutrons, and a charge of 1+. Identify the element symbol and determine the number of protons and electrons in this ion. Write the nuclear symbol of the atom with 7 protons, 7 neutrons, and a cha...
The nuclear notation of an atom or an ion shows the number of protons, the number of neutrons, and sometimes, the number of electrons. However, these are not presented as they are because they are encoded as the mass number and the atomic number. With this, it is easier ...
PROBLEM TO BE SOLVED: To provide an electron-emitting element, an electron source and an image forming device capable of emitting uniform electrons.;SOLUTION: With the p-MOS structure, the base body is an n-type silicon substrate 1, the high-potential electrode is a gate electrode 4, the ...
To determine whether the statement "The element with atomic number 17 has the least size among all the elements of that period" is true or false, we can follow these steps:Step 1: Identify the Element - The element with atomic
This keeps the glass anode substrate from being directly attacked by electrons, to thereby prevent decomposition of water and the like contained in a surface of the glass, resulting in oxygen which causes deterioration in emission characteristics of emitter cones being kept from being released from ...
This has the effect of ionizing the gas and, when seeded with a source of electrons from a high-voltage spark, forms a very high temperature plasma discharge (~10,000 K) at the open end of the tube. The plasma temperature and electron number densities are a function of the experimental ...
What is the name of the element with a valence electron configuration of 2s^22p^2? Which element below has five valence electrons? a. Si b. Se c. S d. I e. Sb Which one of these ions do not have [[Xe] as its electronic configuration? a. Te^{2-} b. I^{-} c. Cs^{+} ...
The atomic number of an element is 6. How many electrons exist in the second electron shell in this element? The atomic number of an element is 7. How many electrons do exist in the second electron shell in this element? how many electron...
The main results of our study are based on the assumption of strong exchange splitting, for which the interaction between electrons with parallel spins dominates. In principle, the correlation-enhanced SOC effect should also be valid under more general circumstances. In moderate spin-splitting case,...