The element has three valence electrons. In which group is it in the periodic table? A. Group 13 B. Group 14 C. Group 15 D. Group 16 相关知识点: 试题来源: 解析 A。有三个价电子的元素在第十三族。在周期表中,主族元素的族序数等于其最外层电子数。
A certain element has its outermost electron in a 2s subshell. It has valence +1 because it has 1 more electrons than a certain noble gas. What element is it? Express your answer using its one- or two What does the atomic number of an element tell you ...
Which element has 32 protons in its nucleus? What do the electron configurations for all the group 18 noble gases have in common? What element has 4 protons 5 neutrons and 2 electrons? What element has 6 protons, 8 neutrons, and six electrons?
Which element has: A total of three shells, with four electrons in it... 01:42 Which element has: A total of two shells with three electrons in its ... 01:38 Which element has: Twice as many electrons in its second shell as in ... 01:42 What property do all elements in the sa...
An atom of an element has a proton number of 17 and mass number of 35.Which statement is definitely true to describe the atomic structure of another isotope of this element?D A It has a proton number of 17 and mass number of 35. B Its number of electrons is 18 C Its number of neu...
5 An atom of an element has a proton number of 17 and mass number of 35.Which statement is definitely true to describe the atomic structure of another isotope of this element?B It has a proton number of 17 and mass number of 35. B Its number of electrons is 18Its number of neutrons...
To solve the question of identifying an element that has twice as many electrons in its second shell (L shell) as in its first shell (K shell), we can follow these steps:1. Identify the Shells: - The first shell is known as
Which element is expected to have a “sea” of electrons; Hydrogen ; Nitrogen ; obalt ; hlorine ;E Oceanium
Which element has the lowest ionization energy? What is the electron configuration of calcium, which has 20 electrons? What is the valence electron configuration for the arsenic atom? Does the octet rule only apply to elements belonging to Groups 1, 2, 13 to 18, since t...
百度试题 结果1 题目43. Which element has atoms with exactly four valence electrons in its ground state?C(A) Ca (B) Cr (C) Si (D) S 相关知识点: 试题来源: 解析 C 反馈 收藏