百度试题 结果1 题目Protons and neutrons are known as___ A) Electrons B) Neutrinos C) Nucleons D) Quarks 相关知识点: 试题来源: 解析 C 反馈 收藏
Protons and Neutrons: What Are They?Jean Louis Van Belle
Scientists have()the theory that protons and neutrons are composed of three smaller particles.[单选题] A. kept up with B. put up with C. came up with D. caught up with 相关知识点: 试题来源: 解析 C 正确答案:C 答案解析:come up with意思是“想出,提出”。译:科学家提出了中子和质子由...
百度试题 题目Atoms are made from even smaller particles. They are Protons, Neutrons and Electrons. A.正确B.错误相关知识点: 试题来源: 解析 A 反馈 收藏
百度试题 结果1 题目The nucleus of an atom is _ of swiftly moving protons(质子)and neutrons(中子)that are bound together by very strong forces. A. consisted B. contained C. composed D. compressed相关知识点: 试题来源: 解析 C 反馈 收藏 ...
百度试题 结果1 题目1 In which species are the numbers of protons, neutrons and electrons all different? B A (19)/9 F B Na C P D (32)/(16)S^2- 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30 years ago, scientists___the theory that protons and neutrons are posed of three smaller particles.相关知识点: 试题来源: 解析 came up with 反馈 收藏
In fact in a nucleus, protons and neutrons are exchanging a meson at extremely fast speeds, when the neutrons lose a meson becomes a Proton, when the Proton is a meson becomes a neutron. There is no doubt that being swapped is of positive charge. Due to due to the exchange of Mesons ...
百度试题 结果1 题目2 In which species are the numbers of protons, neutrons and electrons all different? D A _(13)^(27)Al B CL C S2 Dkt 相关知识点: 试题来源: 解析 D 反馈 收藏
1Atoms, the basic building blocks of matter, are made of three basic components: protons, neutrons and electrons. The protons and neutrons cluster together to form the nucleus, the central part of the atom, and the electrons orbit about the nucleus. Protons and electrons both carry an electric...