百度试题 结果1 题目10 An isotope of element Y has 19 protons and 20 neutrons in its nucleus. Which is the symbol for the ion of Y? B2039A YB19192039C YD1919 相关知识点: 试题来源: 解析 B 反馈 收藏
Which combination of protons, neutrons, and electrons is correct for the isotope copper-63, ? 选项: A. 29 p+ , 29 n°, 63 e− B. 34 p+ , 29 n°, 34 e− C. 34 p+ , 34 n°, 29 e− D. 29 p+ , 34 n°, 29 e− E. 63 p+ , 29 n°, 63 e− 相关知识点...
5 An atom Y has 17 protons and 18 neutrons.Which of the symbols represent the atom for Y element?Satu atom Y mempunyai 17 proton dan 18 neutron.Antara berikut yang manakah merupakan symbol mewakili atom bagi unsur Y? C1817A YB YT1835C D35Y Y1718 相关知识点: 试题来源: 解析 C ...
Describe the structure 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
题目5 Which statements comparing the properties of electrons, neutrons and protons are correct?B neutrons and protons are only electrons and both heavier than electrons neutrons are charged AB CD X 相关知识点: 试题来源: 解析 B 反馈 收藏
An atom has 20 electrons and 20 neutrons. What is the mass of this atom? What is the mass number of an atom with 5 protons and 7 neutrons? Suppose a new element is discovered and it has two stable isotopes. One has a mass of 72.027 u and an abundance of 36.30%. The average...
a有 但是 是坏的 But has is bad[translate] a也就是说铁元素原子核中的中子与质子要比其它所有元素原子核中的中子与质子靠近得更紧密,其中子与质子间的强相互作用力也最大,因而当其向同一个方向排列时,其也具有最大的磁场。 In other words, in the hard element atomic nucleus neutron and the proton ...
百度试题 结果1 题目Which ion has a correct set of numbers for its structure? B lon protons neutrons electrons ALi343B A131410(0888D CT172016 相关知识点: 试题来源: 解析 B 反馈 收藏
aIndividuals receiving bilateral training showed a reduction in movement time of the impaired limb and increased upper limb functional ability compared to individuals receiving unilateral training. 接受双边训练的个体显示了对被削弱的肢体的运动时间的减少并且增加了上部肢体功能能力与接受单边的训练的个体比较。[...
1) True 2) False Q2) Iron has atomic number 26. Naturally mined iron contains isotopes of mass numbers 54, 56, 57, and 58. Which of the following statements is FALSE? 1) Every atom of iron has 26 protons 2) Some iron atoms have 30 neutrons 3) Some iron atoms have 54 neutrons 4...