原子的中心,即原子核,包含了带正电荷的微粒,称为“质子”。The center, ___ nucleus, of an atom contains positively
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原子的中心,即原子核,包含了带正电荷的微粒,称为“质子”。The center, ___ nucleus, of an atom contains positively charged particles called protons. A、and B、or C、but D、for
百度试题 结果1 题目The nucleus of an atom is composed of swiftly moving protons and neutrons that are___together by very strong forces.相关知识点: 试题来源: 解析 held
Nuclear fission is the splitting of the nucleus of an atom. Only a few elements are suitable for use in this way, the most important ones being Uranium-235, Uranium-233, and Plutonium- When a nucleus of one of these elements is struck by a free neutron it breaks down into two lighter...
百度试题 结果1 题目The nucleus of an atom is negatively charged. A. T B. F 相关知识点: 试题来源: 解析 B
单项选择题The nucleus of the atom is composed of swiftly moving protons and neutrons that areheldtogether by very strong forces. A.mixed B.propelled C.pounded D.bound 点击查看答案 延伸阅读 你可能感兴趣的试题 1.单项选择题Theories of teaching have not been asfullydeveloped as have theories 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 the element of the atom, while the number of neutrons can vary...
The electrons, those are present in the outermost shell of an atom, are known as the valence electrons. According to Bohr-Bury model, the outermost shell of an atom can have a maximum of 8 electrons.Atomic NumberThe total number of protons, present in the nucleus of an atom, is known ...
Beginning in the 1890s, investigated the attenuation of electron beams passing through matter. This attenuation can have two causes: the electrons can lose their energy by exciting or ionising atoms, or they can be elastically scattered and so change their directions and leave the beam. produced...