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
according to theAmerican Institute of Physics. In 1920, Rutherford proposed the name proton for the positively charged particles of the atom. He also theorized that there was a neutral particle within the nucleus, which James Chadwick, a British physicist and student of Rutherford's, was able ...
[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] ...
If the atomic number of an element is 12 and the atomic mass is 25: a. How many protons are there in the nucleus? b. How many neutrons are there in the nucleus? c. How many electrons are in the atom? The number of in t...
The majority of an atoms’ mass comes from the protons and neutrons that make up its nucleus. Electrons are the least massive of an atom’s constituent particles, with a mass of 9.11 x 10-31kg and a size too small to be measured by current techniques. Protons have a mass that is 1,...
Isotopes are forms of an element with varying numbers of neutrons in the nucleus of the atom. As radioisotopes decay, they slowly transform into other isotopes of the same element through gaining or losing neutrons, and eventually they become other elements entirely. This depends on their decay ...