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
B.The charges of neutrons equal the sum of the charges of electrons and protons.C.The charges of protons equal the sum of the charges of electrons and neutrons.D.The charges of electrons equal the sum of the charges of protons and neutrons....
Protons and Neutrons: What Are They?Jean Louis Van Belle
Atoms are made from a nucleus of protons and neutrons and a cloud of electrons.A. 正确B
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
Until 1897, scientists believed that there was no smaller unit of matter in existence than the atom. This changed when J.J. Thomson first discovered the electron, proving the existence of subatomic particles. Later, scientists would also discover protons and neutrons. ...
百度试题 结果1 题目30 years ago, scientists___the theory that protons and neutrons are composed 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 will be at great speed between a meson exchange, which the child will be lost when a meson into a proton, proton get a meson when the time will become a neutron . There is no doubt, to be exchanged is the positive charge. As a result of...
Why neutrons and protons are modified inside nuclei The structure of a neutron or a proton is modified when the particle is bound in an atomic nucleus. Experimental data suggest an explanation for this pheno... G Feldman - 《Nature》
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 反馈 收藏