搜索智能精选 题目An element is a substance all of _ atoms have the same atomic number. A. that B. whose C. what D. which 答案B
Q: What does an atom look like? An atom looks like a very small solar system, with the heavy nucleus in the center and the electrons orbiting it. However, the electrons are in layers and can be simultaneously everywhere that quantum allows. Can atoms multiply? Do atoms reproduce? ... In...
If you know where a certain element sits in the table, and you know a little bit about the properties of the elements above, below, and either side, you can often figure out what the properties of that element will be.How do atoms make molecules and compounds? Atoms are a bit like ...
Sodium is an alkali metal. It holds its place in the periodic table as the first element of the 3rd period. It is the eleventh element in the periodic table. Therefore,The atomic number of Sodium = 11,Number of neutrons in the nucleus of the Sodium ion...
解答一 举报 An atomic weight (relative atomic mass) of an element from a specified source is the ratio of the average mass per atom of the element to 1/12 of the mass of an atom of 12C.and NA=6.02*10^23therefore ... 解析看不懂?免费查看同类题视频解析查看解答 ...
What is the difference between an atom and an ion? Atoms, Elements, and Matter The base unit of matter is the atom, where matter is made up of different types of atoms, i.e. elements. Each atom of a specific element contains some number of neutrons (neutrally-charged), protons (positi...
What element has the lightest atoms?Atomic Number and Atomic Mass:All atoms have an atomic mass and an atomic number. The atomic number determines the element and is equal to the number of protons found in the nucleus. Atomic mass is the mass of the atom and is equal to the total ...
What does water dissociate into? What is the atomic number of H+? Which type of element typically loses an electron to become an ion? What is the autoionization of water? How do you classify hydrogen? What is the Latin name for hydrogen?
A reaction in which the atoms of an element lose electrons and the valence of the element is correspondingly increased. Oxidation The combination of a substance with oxygen. Oxidation (chemistry) A reaction in which the atoms of an element lose electrons and the oxidation state of the element ...
Chapter 5 UEQ Electrons in Atoms What does an atom really look like? Electron Structure. Bohr Model Used to explain the structure of the Hydrogen Atom –Hydrogen has only one electron This electron can only circle the nucleus. Unit 4 Energy and the Quantum Theory. I.Radiant Energy Light –...