百度试题 结果1 题目What are the numbers of protons,electrons,and neutrons in239Pu?相关知识点: 试题来源: 解析 Protons:94, from the periodic table. Electrons : 94, since the atom is uncharged. Neutrons:239-94=145 反馈 收藏
There are just as many protons in the nucleus as electrons__ around it. A.revolvingB.spinningC.rotatingD.spiraling相关知识点: 试题来源: 解析 A 题意是:在原子核中的质子数与___ 它们的电子数相同。 [A] revolving“旋转,绕转”,指某一物体沿一定的轨道围绕着另一物体旋转,符合题意。 [B] spinni...
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Atoms are made from a nucleus of protons and neutrons and a cloud of electrons. A. 正确 B. 错误 相关知识点: 试题来源: 解析 正确 反馈 收藏
a贵重物品不要在网上购买 The valuables do not have to purchase on-line[translate] a我的生日是周一 My birthday is Monday[translate] a流动性大 The fluidity is big[translate] aProtons and electrons are parts of atoms that make up all things in our world 氢核和电子是在我们的世界组成所有事原子...
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
The electrons and protons themselves,however,are only crude first approximations,a way of collecting into a bundle either trains of waves or the statistical probabilities of various different kinds of events. 相关知识点: 试题来源: 解析 然而电子和质子仅仅是粗略的一次近似,这是一种将列波或者不同...
Atomic Particles Atoms are made of protons, neutrons and electrons 99.999999999999% of the atom is empty space Electrons have locations desc
How many electrons, protons, and neutrons are there in an atom of 1H ?Here’s the best way to solve it. Solution Share An atom of \( ^1\text{H} \) (hydrogen-1) consists ...View the full answer Previous question Next questionNot the question you’re looking for? Post an...
An element has an atomic number of 114 and an atomic mass of 285. How many protons, neutrons, and electrons does a neutral atom of this element have? An atom has an atomic number of 8 and a mass number of 17. How many protons, neutrons, and elect...