4.What is known to us is that atoms are made up of protons, neutrons and electrons.众所周知,原子是由质子、中子和电子组成的。 5.What is known to us is that the 21st century is the age of knowledge economy.众所周知,21世纪是知识经济的时代。 6.What is known to us is that computers ...
Protons and Neutrons: What Are They?Jean Louis Van Belle
What Are Neutrons? Neutrons, along with protons, are subatomic particles found inside thenucleus of every atom. The only exception is hydrogen, where the nucleus contains only a single proton. Neutrons have a neutral electric charge (neither negative nor positive) and have slightly more mass than...
It is composed of protons, which have a positive charge, and neutrons, which have no charge. Protons, neutrons, and the electrons surrounding them are long-lived
Elements in the same group have the same number of what? A. Protons B. Neutrons C. Electrons D. Valence E. lectrons 相关知识点: 试题来源: 解析 D。原因:“Elements in the same group have the same number of valence electrons.”。 反馈 收藏 ...
What are gamma rays made up of? Gamma Rays: All the atoms are composed of the nucleus with protons and neutrons as part of the nucleus. The nucleus may sometime get unstable due to some reason and achieve stability after undergoing a radioactive decay. This decay is of three types, alpha...
Electrons are tiny (0.000549 amu), negatively charged particles that are described as orbiting the protons and neutrons that make up an atom's nucleus, in the manner of planets orbiting the sun. This is a rough description at best, however, as advances in quantum physics have led to the co...
The strong force binds quarks inside neutrons and protons, and holds atomic nuclei together.When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Protons, made of three quarks, colliding. The quarks are held together by the nuclear strong for...
Generally, mass is defined as the measure of how much matter an object or body contains - the total number of sub-atomic particles (electrons, protons and neutrons) in the object. If you multiply your mass by the pull of earth's gravity, you get your weight. So if your body weight is...
Protons are subatomic particles that, along with neutrons, comprise the nucleus or central portion of an atom. The rest of the atom consists of electrons that orbit the nucleus, much as Earth orbits the sun. Protons can also exist outside an atom, in the atmosphere or in space. ...