百度试题 结果1 题目(iii) What is the total number of particles in the nucleus of an atom ofX?34[1] 相关知识点: 试题来源: 解析 34 反馈 收藏
The mass number of an atom is the total number of protons and neutrons contained within the nucleus of the atom. The number of protons determines the element and will always equal the atomic number of that element. The number of neutrons can change and will determine which isotope of that ...
Answer to: The number of (a) ___ in the nucleus determines what element a substance is. If the number of (b) ___ changes, the atom is...
[translate] ahis force is of electric nature,and the attraction between electrons of one atom to the nucleus of another atom contribute to what is known as chemical bonds. 他的力量是电自然,并且吸引力在一个原子之间电子对另一个原子中坚力量对什么贡献通认作为化学键。 [translate] ...
Which element has 32 protons in its nucleus? If an atom contains 14 protons, it is an atom of which element? Which two particles make up the nucleus of an atom? What region of an atom contains the protons and neutrons? What element with a mass number of 100 has 56 neutrons in its ...
In an unstable atom the proton/neutron balance is slightly different from its stable form, resulting in the binding energy of the nucleus being out of balance. As elements get heavier, more neutrons must exist in the nucleus to balance out proton-proton repulsion forces. For instance, uranium-...
The more protons and neutrons contained in an atomic nucleus, the heavier that element is. So, for example, lead has 82 protons and between 120 and 132 neutrons in its nucleus, whereas hydrogen, the lightest element, has just one proton and occasionally one or two neutrons. The number of ...
Each atom is a collection of electrons, protons, and neutrons, and it has a place on the periodic table of elements. The protons and neutrons are all contained in the nucleus at the center of the atom and are most of the atom's mass. The protons have a positive charge and determine ...
Virtually all the mass of an atom resides in its nucleus, according toChemistry LibreTexts. The protons and neutrons that make up the nucleus are approximately the same mass (the proton is slightly less) and have the same angular momentum, or spin. ...
The neutrons and protons are found in the nucleus (center) of the atom and the electrons reside in a shell surrounding the nucleus. Neutrons are heavy particles, but they have no charge - they are neutral. Protons are also heavy particles and they have a positive charge. Electrons are ...