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
An element has an atomic number of 114 and an atomic mass of 285. How many protons, neutrons, and electrons does a neutral atom of this element have? The atomic number of an element gives the number of and in the atom while the mass number gives the total number of and. ...
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 it?
What chemical element is Cu? Which chemical element has the symbol B? Which chemical element has the symbol Pt? What chemical element has 4 protons? What element has 10 electrons? What element has 13 electrons? Which chemical element has the symbol Sn?
How many valence electrons are in PF3? How many valence electrons are there in PO_3^{-3}? a. 20. b. 26. c. 32. d. 23. Each Group 16 element has how many valence electrons? a. 4 b. 6 c. 8 d. 16 How many valence electrons are in each...
In a binaryioniccompound, one of the elements is Cl.Which of the following would the other element most likely to be? Cl I Mg Br Binary = two parts Since Cl-Cl would be covalent – not right and the same would be for the other halogens:I, and Br. Mg is a metal forms a cation...
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Silicon has total 14 electrons in its isolated atom. The first orbit consists of 2 electrons. The second orbit consists of 8 electrons and the third orbit consists of 4 electrons. As there are four electrons in the outer most orbit of a silicon atom, the silicon is a tetravalent element....
MERLIN Multi-Element Radio-Linked Interferometer Network MUSE Multi-Unit Spectroscopic Explorer NFM Narrow Field Mode NIRSpec Near-Infrared Spectrograph NLR Narrow Line Region PSF Point Spread Function RGS Reflection Grating Spectrometer RL Radio Loud RQ Radio Quiet SDSS Sloan Digitized Sky Survey SMBH ...
Some elemental types of atoms are better than others at releasing their electrons. To get the best possible electron flow we want to use atoms which don't hold very tightly to their valence electrons. An element's conductivity measures how tightly bound an electron is to an atom. ...