Properties of Atoms All atom have a neutral charge because the number of positive protons equals the number of neg electrons.: In nucleus of atom are protons that have a positive charge (p+) and neutrons that have a neutral charge. Outside of the nucleus are the electrons. Electrons have ...
【题目】翻译一下可以吗1.An atom is made up of positive charges (protons),neutral charges (neutrons)and negative charges (electrons).T he protons and neutrons are found within the nucleus ofan atom,while we learnt in P08 Curious glowthat the electrons are found in different energy levels ...
A.The charges of protons equal the charges of electrons.B.The charges of neutrons equal the sum of the charges of electrons and protons.C.The charges of protons equal the sum of the charges of electrons and neutrons.D.The charges of electrons equal the sum of the charges of protons...
Describe the structure of an atom.An atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines
An atom s formal charge is the difference between the number of valence electrons in an isolated atom and the number of electrons assigned to that atom in a Lewis structure. 参考答案:对 点击查看答案&解析
A neutral atom has the same number of protons and electrons (charges cancel each other out). An ion has an unequal number of protons and electrons. If the charge is positive, there are more protons than electrons. If the charge is negative, electrons are in excess. ...
A PRECISE measure of the charge on an atom in a molecule is provided by calculating the number of electrons within a sphere of covalent radius using molecular wavefunctions. The results for alkyl substitution suggest that the simple qualitative ideas of the inductive effect may be less simple ...
The important thing to understand about ions is that they are the only types of atom with anet charge. For convenience, chemists (and scientists in general in most cases) take the charge of an electron to be −1, while a proton has a charge of +1. ...
Explore the Materials——From an Atom to a Device(走进材料——从原子到器件)(北京航空航天大学) 大学MOOC慕课 客观题答案 The basic unit of materials is___, which can bond directly together to form materials, or convert into ions, or assemble into molecules. A. nucleus B. electron C. proton...
on theChem Teamsite. Thomson's model of the atom included a large number of electrons suspended in something that produced a positive charge giving the atom an overall neutral charge. His model resembled plum pudding, a popular British dessert that had raisins suspended in a round cake-like ...