百度试题 结果1 题目6 An atom of element Q contains 19 electrons, 19 protons and 20 neutrons.What is Q? B A calcium B potassium C strontium D yttrium 相关知识点: 试题来源: 解析 B 反馈 收藏
What element has 81 protons? What element has 6 protons? What element has 16 protons? What element has 20 protons? What type of element is flerovium? What is the element symbol for cobalt? What type of element is nihonium? What is the chemical element plumbum?
What element has 20 protons? What element has 16 protons? What will an atom do if it has 1 to 3 valence electrons? An atom of an element has 10 protons. what is also true of that atom? A single atom of an element has 11 protons, 11 electrons, and 12 neutrons. Which element is ...
What is the atomic symbol of the ion with 63 protons 60 electrons and 88 neutrons? What are the three components of an atom of an element? Which element below has the most metallic character? (a) Iron (Fe) (b) Potassium (K) (c) Gallium (Ga) (d) Fluorine (F) (e) Boron (B) ...
ICSEC - Grade 09 - CHEMISTRY - Atomic Structure And Chemical Bonding - Q23
a毫无疑问 ) he is qualified for the job. Without a doubt) he is qualified for the job. [translate] aAn atom containing 34 protons, 43 neutrons, and 34 electrons would have what symbol? 包含34个氢核、43个中子和34个电子的原子将有什么标志? [translate] ...
A chlorine atom, found in the periodic table's halogen group, has 17 protons and 17 electrons, making it electrically neutral. It often participates in reactions by gaining an electron to achieve a stable electronic arrangement. The chloride ion, on the other hand, results from this gain of ...
Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www.springernature.com/us). Scientific American maintains a strict policy of editorial independence in reporting developments in science to our...
The Rutherford model of the atom shows electrons orbiting a positively-charged nucleus. However, the model does not show the subatomic particles... Learn more about this topic: Rutherford Atomic Model | Experiment, Observations & Limitations
For example, Ca2+is the symbol for a calcium ion that has a positive 2 charge. Since the atomic number of calcium is 20 and the charge is positive, this means the ion has 20 - 2 or 18 electrons. Chemical Elements To be an element, a substance has to at least have protons, since ...