B.WrongC.Not mentioned 相关知识点: 试题来源: 解析 B解析:这句话是错的,答案在第二段第二句:An atom of ordinary carbon,called carbon-12,has six protons(质子) and six neutrons(中子) in its nucleus.…普通的碳原子有6个中子。反馈 收藏 ...
Protons, neutrons, and the electrons surrounding them are long-lived particles present in all ordinary, naturally occurring atoms. Other subatomic particles may be found in association with these three types of particles. They can be created only with the addition of enormous amounts of energy, ...
Describe the structure of an atom.An atom consists of a nucleus, which contains protons and neutrons, surrounded by electrons. Protons have a positive charge, neutrons have no charge, and electrons have a negative charge. The number of protons determines
What element has 6 protons, 8 neutrons, and six electrons? What element has 4 protons 5 neutrons and 2 electrons? What is a stable atom? What part of the atom has a negative charge? Which element has 32 protons in its nucleus?
5 An atom Y has 17 protons and 18 neutrons.Which of the symbols represent the atom for Y element?Satu atom Y mempunyai 17 proton dan 18 neutron.Antara berikut yang manakah merupakan symbol mewakili atom bagi unsur Y? C1817A YB YT1835C D35Y Y1718 相关知识点: 试题来源: 解析 C ...
The atomic weight of an atom is given in most cases by the mass number of the atom, equal to the total number of protons and neutrons combined. An atom may be conveniently symbolized by its chemical symbol with the atomic number and mass number written as subscript and superscript, ...
9. With the help of Table 4.1, find out the mass number of oxygen and Sulphur atoms. Ans: The mass number of an atom is equal to the sum of protons and neutrons present in its nucleus. \[Mass\text{ }number\text{ }of\text{ }oxygen=8+8\] ...
An atom is made up of ___. A. protons, neutrons and electrons B. protons and neutrons only C. neutrons and electrons only D. protons and E. lectrons only 相关知识点: 试题来源: 解析 A。原子由质子、中子和电子组成。选项 B、C、D 都不完整。反馈...
If you are given the atomic weight of an atom, you need to subtract the number of neutrons to get the number of protons. Sometimes you can tell the elemental identity of a sample if all you have is the atomic weight. For example, if you have a sample with an atomic weight of 2, ...
5. The nucleus of a hydrogen atom, for example, contains a single proton, while a helium nucleus contains two protons and two neutrons.6. The electrons in an atom are distributed in energy levels or shells around the nucleus, with each shell capable of holding a specific number ...