6. A(n) 6 is a tiny element that is part of an atom, such as an electron, proton (质子), or neutron (中子). 相关知识点: 试题来源: 解析 6.particle 该题要求填写一个词,指代原子中的微小组成部分,例如电子、质子或中子。这些粒子被称为“基本粒子”,但更准确地说,质子和中子是由更小...
百度试题 结果1 题目 5. An atom can be considered the smallest unit of an element that retains the D of that element. A. Shape B. Mass C. Texture D. Properties 相关知识点: 试题来源: 解析 D 反馈 收藏
View Solution An alkane that gives only one types of monohalogen derivative on homogenation is ___. View Solution The element which has only one oxidation state in its compounds is View Solution Mark the element which shows only one oxidation state in its compounds View Solution BHARATI BHAWAN...
Water, on the other hand, is not an element: a molecule of water consists of two hydrogen atoms (one proton each) sharing electrons with an oxygen atom (eight protons). Now, what does it mean to claim that an element "cannot be broken down into a simpler form," and why aren't ...
What is atom? Which of the following atoms contains only three valence electrons: Li, B, N, F, Ne? An element in its ground state has the following electron configuration: (Ne)3s23p2. What is this element? An element in its ground state has the following electron configuration: (Ar)4...
1 An atom of an element has an atomic number of 6 and a mass number of 12.(a)Using this information, complete the table to show the numbers of protons,neutrons and electrons in one atom of this element.(2)number of protons number of neutrons number of electrons(b)The Periodic Table ...
(i) Group 13 (ii) The element's position in Group 13 is due to its outer shell having 3 electrons. (iii) Period 3 (iv) Aluminum (Al) (v) A diagram showing 2 electrons in the first shell, 8 electrons in the second shell, and 3 electrons in the third shell. 该元素位于元素周期表...
The smallest particle of an element that retains its identity in a chemical reaction is a(n)... atom Which of these descriptions is incorrect? electron: negative charge, mass of = 0 amu, in nucleus. Thallium has 2 isotopes, Thallium-203 and Thallium- 205.nThallium's atomic # is 81, ...
An amu is defined as one-twelfth of the mass of carbon (C12), which is 1.66 × 10− 27 kg. The atomic weight of an element listed in most chemistry handbooks is the relative atomic weight, that is, the total number of nucleons in the atom. So, for example, oxygen (O) has an...
The number of isotopes for a given element is variable: for example, the F fluorine atom has only one isotope (i.e. 19F) and the Cl chlorine possesses two isotopes (i.e. 35Cl and 37Cl). Some isotopes are unstable forms of elements; they are radioactive and are called radioisotopes: ...