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
更新1: One last question... If the first element of group 1 pares to the last element of group 2... Which is more reactive? And which element of group 2 equals to the reactivity of any element in group 1? For example Ba = Na?? Just for an example..Your question is...
A bromine ion contains 35 protons, 35 neutrons, and 36 electrons. What is the net charge of the ion? For a neutral atom of element 37, what would be the probable ground-state electronic configuration? In your expression for the configuration, list the subshells in order of filli...
The number of protons determines the element of the atom, while the number of neutrons can vary (resulting in different isotopes of the same element). Electrons exist in energy levels or shells around the nucleus, and each shell can hold a specific number of electrons. Example of an atom: ...
element is atomic number 7, which means each atom has 7 protons. Its element symbol is .如何将EXCEL生成题库手机刷题 如何制作自己的在线小题库 > 手机使用 分享 反馈 收藏 举报 参考答案: Nitrogen;n itrogen;N 复制 纠错举一反三 《中华人民共和国药典》规定的注射用水是( ) A. 反渗透水 ...
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 ...
Tin is the 49th most abundant element on Earth and has, with 10 stable isotopes, the largest number of stable isotopes in the periodic table, thanks to its magic number of protons. It has two main allotropes: at room temperature, the stable allotrope is β-tin, a silvery-white, ...
Has a -1 charge 3. Has a mass about the same as that of a proton 4. Is att The nucleus of an atom consists of which particles? Name three subatomic particles found in the atom of an element. If an atom has 17 electrons, 20 neutrons, and 19 ...
Hint: Each of the ions has a different number of protons, but each has one electron, so the Bohr model How many electrons in an atom can have each of the following quantum number or sub level designations? n=4, l=3A certain element has its outermost el...
If carbon has an atomic number of 6, and a mass number of 14, how many neutrons are in the atom?Which of the following facts allows you to determine that atom A and atom B are isotopes of the same element? a) They each have 6 protons. b) They each have 4 ...