Protons and Neutrons: What Are They?Jean Louis Van Belle
An atom has 20 electrons and 20 neutrons. What is the mass of this atom? What charge would an ion that has 11 protons, 11 neutrons, and 10 electrons would have? What is the difference between protons, neutrons, and electrons? How many protons, electrons, and neutrons are in Hydrogen-3...
Atoms have several characteristic parts, namely a nucleus of protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons are neutral, and electrons have a negative charge. Answer and Explanation:1 The electrons of an atom are arranged in energy levels. These levels are...
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
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...
If you look inside an atom, you find tiny particles called protons, neutrons, and electrons. Atoms of each element have different numbers of these particles. Protons and electrons have electrical charges. You can think of this as being similar to a battery, which has a + (positive) and -...
But the dense core continues to collapse, generating pressures so high that protons and electrons are squeezed together into neutrons, as well as lightweight particles called neutrinos that escape into the distant universe. The end result is a star whose mass is 90% neutrons, which can't be ...
To solve the question, we need to determine the atomic number and mass number of the ion X2− which contains 10 electrons and 8 neutrons. We will also identify the element represented by X. Step 1: Determine the number of protonsThe ion X2− has a charge of -2, which means it ...
Protons and neutrons, each with masses of approximately one atomic mass unit, are jointly referred to as "nucleons" (particles present in atomic nuclei). Neutron The neutron is a subatomic particle, symbol n or n0, which has a neutral (not positive or negative) charge, and a mass slightly...
9 Neutron Neutron was discovered as a key to understanding atomic structure. The discovery of the Neutron helped clarify how the nucleus is composed. 5 Electrons Electron has a minimal mass compared to protons and neutrons. The mass of an Electron is so small it's almost negligible. 6 Neutron...