The number of neutrons is what defines the type of isotope an element it is while the number of protons identifies the type of atom it is. Helium-4, which is the most common isotope of helium has two protons and two neutrons in its nucleus. A common hydrogen atom has no neutrons ...
If an atom with a mass number of 202 has 122 neutrons, it is an atom of which element? What element has 53 protons and 74 neutrons? What element has 4 protons 5 neutrons and 2 electrons? What element has 6 protons, 8 neutrons, and six electrons? What is the mass num...
What element has the most stable isotopes?Isotopes:Each element in the universe can be subcategorized into different isotopes of that element. These isotopes are defined by the number of neutrons found in the element's nucleus, which can vary from atom to atom. Isotopes can either be stable ...
Jones, 2015, pg 251), usually ending up with a core of almost pure iron. Even this heavy element isn't dense enough to prevent massive cores from further collapse. As this occurs thegravitational pressureis so intense that the negatively-charged electrons...
When a chemical reaction takes place to combine two or more electrons into one or more compounds, the electrons of the atoms of each element interact with each other. However, the reaction does not affect the atoms' nuclei. States of matter ...
neutrons, which can facilitate a form of nucleosynthesis called the rapid neutron capture process, or r-process. Elements heavier than iron can be created by the r-process when iron, the heaviest element that can be forged by stars, soaks up free neutrons and transforms into other, heavier ...
Remember, an isotope is a form of a chemical element that has the same number of protons in its atomic nucleus but a different number of neutrons. The most common isotope of helium on Earth is helium-4, which does not have any known or potential uses as an energy source. Helium-3, in...
Nuclear reactors split atoms of uranium, a mildly radioactive element, to form heat. This process releases heat and neutrons. Some of these neutrons go on to collide with other uranium atoms, causing them to fission, which keeps the nuclear reaction going. ...
Significant (similar to neutrons). Negligible. 5 Role in Atom Determines atomic number and element identity. Influences chemical properties and bonding. 15 Relative Mass Much heavier than electrons. Much lighter than protons. 7 Compare with Definitions Proton One of the determinants of an atom's id...
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