E ReadandAnswerl阅读短文并完成下面的题目. Atoms and Their Atomic Numbers All atoms have different numbers of protons, neutrons, and electrons. The protons are positively charged and are in the nucleus. Neutrons are also in the nucleus. But they have no charge. And electrons orbit the nucleus...
百度试题 结果1 题目What are the numbers of protons,electrons,and neutrons in239Pu?相关知识点: 试题来源: 解析 Protons:94, from the periodic table. Electrons : 94, since the atom is uncharged. Neutrons:239-94=145 反馈 收藏
this would be a whole number, adding the number of protons, neutrons, and electrons together for the atom. However, the value given in the periodic table is an average of the mass of allisotopesof a given element. While the number of ...
Atoms contain protons, neutrons, and electrons, and the number of protons each atom has determines the element. Read Element Notation & Subscript Numbers | Overview & Differences Lesson Recommended for You Video: Naming Ionic Compounds | Binary, Transition Metals & Polyatomic Video: Binary ...
“magic number” of neutrons or protons. The nuclei He-4, O-16, and Pb-208 (82 protons and 126 neutrons) that contain magic numbers of both neutrons and protons are particularly stable. The relative stability of these nuclei is reminiscent of that of inert gas...
Neils Bohr model of the Atom: Electrons can be in 1 of many “principle energy levels”, but cannot be in between any of these energy levels. Each Principle Energy Level (n) is given a number n=1 n=2 n=3 Electrons move around the nucleus like planets move around the sun. ...
1.Any of the numbers, 2, 8, 20, 28, 50, 82, or 126, that represent the number of neutrons or protons in strongly bound and exceptionally stable atomic nuclei. 2.SportsThe number of wins by a leading team and losses by its closest competitor required in order for the leading team to...
An element, simply put, is afundamental unit of matter that cannot be easily broken down. It consists of a specific number of protons and variable neutrons and electrons. All of matter is made of these 118 elements, combined in various ratios and kept in different states, like solids. ...
In addition, his theory leads to a conclusion that protons and neutrons fill sub shells in a different way. This is because the protons are charged particles, and by Coulomb repulsion they try to get as far away from each other as possible, hence tending to occupy the outer regions of ...
How many protons and neutrons are in the second isotope? How many protons and neutrons are in the third isotope? Complete the following chart: Isotope name atomic # mass # # of protons neutrons electrons uranium-235 uranium-238 boron-10 boron-11...