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...
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 ...
An atom has 20 electrons and 20 neutrons. What is the mass of this atom? Together, the protons and neutrons are called what? What is the name of the subatomic particles located farthest from the nucleus of the atom? What is the atomic number for uranium?
What subatomic particles (protons, neutrons, and or electrons) are found in the nucleus of an atom? If a neutral atom loses one electron, what is the electrical charge of the atom? What is the electrical charge of an ionic compound?
The atom is the smallest unit on Earth. It is the basic component of any type of matter. It cannot be broken down or sectioned. Protons, neutrons and electrons make up the subatomic particles of an atom. The three subatomic particles determine the overa
What is the difference between an electron and a muon? Muons areabout 200 times heavier than electrons; muons are about 100 MeV, whereas electrons are about 0.5 MeV. It follows that whereas an electron is stopped in the ECAL, a muon just ploughs through it and into the muon chamber, as...
An atom is built with a combination of three distinct particles: electrons, protons, and neutrons. Each atom has a center nucleus, where the protons and neutrons are densely packed together. Surrounding the nucleus are a group of orbiting electrons. ...
dense enough to prevent massive cores from further collapse. As this occurs thegravitational pressureis so intense that the negatively-charged electrons and positively-chargedprotonsthat comprise the iron nuclei in this stellar core are crushed together, creating a sea of uncharged, or neutralneutrons...
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
An electron is a negatively charged subatomic particle that together with protons and neutrons form an atom's nucleus. Learn why electrons are unique.