Protons and Neutrons: What Are They?Jean Louis Van Belle
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
What subatomic particle has a mass of one atomic mass unit? a. proton b. neutron c. electron d. more than one of the above Which subatomic particle has no charge? a. proton b. neutron c. electron What is the mass number of an atom with 3 protons, 4 neutrons, and 3 electrons?
” which is nearly equal to the atomic mass of that element. Protons have a slightly smaller mass than neutrons. That’s why atomic mass numbers aren’t whole numbers. For example
a毫无疑问 ) he is qualified for the job. Without a doubt) he is qualified for the job. [translate] aAn atom containing 34 protons, 43 neutrons, and 34 electrons would have what symbol? 包含34个氢核、43个中子和34个电子的原子将有什么标志? [translate] ...
A nucleon is a collective term for protons and neutrons inside an atomic nucleus, while the nucleus is the core of an atom, containing nucleons and thus most of the atom's mass.
However, researchers in the late 1800s and early 1900s discovered that atoms were made of smaller particles called protons, neutrons, and electrons. More recently, they discovered that even the protons and neutrons were made of smaller particles called quarks....
Fusion offers a potential long-term energy source that uses abundant fuel supplies and does not produce greenhouse gases or long-lived radioactive waste. Fusion releases energy because the mass of its bound nucleus is less than the mass of it component protons and neutrons; the mass deficit is...
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...
Visible matter, also called baryonic matter, consists of baryons — an overarching name for subatomic particles such asprotons, neutrons and electrons. Scientists only speculate what dark matter is made of. It could be composed of baryons but it could also be non-baryonic, which means consisting...