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 13 electrons? What is metallic hydrogen? What is the most common chemical element on Earth? What is the first element on the periodic table? What is the chemical element lead? Which element has an atomic number of 8?
If an atom contains 14 protons, it is an atom of which element? Which atom has the smallest number of neutrons? What is an atom that has more protons than electrons? Which particle of an atom has the least mass? Which element has the highest atomic number?
How would tendency to gain electrons change as you go down a group ? 04:12 Why do elements present in a group show similar characteristics after ... 03:00 Given below are some of the elements of first group Li, Na, K (Their... 03:12 An element has electronic configuration 2, 8, ...
go first into the L-shell, which can hold 8 electrons, then the M-shell which can hold 18 electrons, then the N-shell and O-shells that can fit 32 electrons each. (Actually, the O-shell could theoretically fit 50 electrons, but there is no known element with this many electrons.) ...
Each element has its own unique electron configuration. An electron configuration tells us the most probable location of an atom's electrons. Electron configurations are part of the quantum mechanical model of the atom. Answer and Explanation: ...
An atom that has more protons than electrons is called a cation. Ions are charged atoms or combinations of atoms. When an atom loses one or more... Learn more about this topic: Cation | Definition, Formation & Examples from Chapter 28/ Lesson 39 ...
Ligases form a bond by removing the water element, while hydrolases break bonds by adding water. There are various subclasses of ligases that include ATP synthesis. Cofactors in Enzymes Cofactors are non-protein compounds associated with enzymes. A cofactor is needed for the proper functioning of ...
a chemical element is the number of protons found in the nucleus of every atom of that element. The atomic number uniquely identifies a chemical element. It is identical to the charge number of the nucleus. In an uncharged atom, the atomic number is also ...
The electron configuration 1s22s22p63s23p2 is theelement Silicon. Which is the electronic configuration for oxygen quizlet? Oxygen has the electron configuration1s2 2s2 2p6. Why is the electronic configuration of oxygen written as? Oxygen has 8 electrons. The first two electrons will pair up in...