百度试题 结果1 题目3 How many neutrons are present in the atom ? B A 21 B 24 C 45 D 66 相关知识点: 试题来源: 解析 B 反馈 收藏
百度试题 结果1 题目5 How many neutrons are present in the atom X? B A 21 B 24 C 45 D 66 相关知识点: 试题来源: 解析 B 反馈 收藏
aIf you study hard, you ___ the examination. 如果您艰苦学习,您___考试。[translate] aHow many neutrons are there in the nucleus of a Th-232 atom 多少个中子那里在Th232原子的中坚力量[translate]
In chemistry, the indication of the total number of protons present in the nucleus of one atom of a chemical element is usually done by their atomic number. The position of the chemical element in the periodic table is also represented by its atomic number...
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Does sulfur have 16 neutrons? (b) By referring to a periodic table or a table of elements, we see that sulfur (S) has an atomic number of 16. Thus, each atom or ion of sulfur must contain 16 protons. We are told that the ion also has16neutrons, meaning the mass number of the ...
These particles, made up of protons and neutrons, are large and can only travel a short distance -- in fact, they can be stopped with just a piece of paper or even your skin. However, inhalation or ingestion of alpha particles can be very dangerous. Once inside your body, alpha ...
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example,carbon atomsalways have six protons;hydrogen atomsalways have one; andoxygen atomsalways have eight. Different versions of the same element, called isotopes, can have a different number of neutrons. Elements can also gain or lose electrons to become charged, in which case they are called...
A larger atom is more likely to absorb an X-ray photon in this way, because larger atoms have greater energy differences between orbitals -- the energy level more closely matches the energy of the photon. Smaller atoms, where the electron orbitals are separated by relatively low jumps in ...