28 Which statement correctly describes the elements in Group 0 of the Periodic Table? C A All of their atoms have eight electrons in the outer shell. B They are colourful gases. C They are inert and unreactive. D They exist as diatomic molecules. 相关知识点: 试题来源: 解析 C 反馈...
A3The table shows how elements in Group ll of the Periodic Table react with cold water.element reaction with cold water magnesium reacts slowly with cold water calcium reacts readily with cold water strontium reacts vigorously with cold water barium reacts very vigorously with cold water radium(...
<p><strong>Step-by-Step Solution:</strong></p><p>1. <strong>Definition of Groups in the Modern Periodic Table</strong>: - Groups are the vertical columns in the Modern Periodic Table. Each group contains elements that share similar chemical properties
3D Illustration of Group 2 Elements from Periodic Table along with their Atomic Number and Atomic Mass ,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里巴巴、京东、亚马逊、小米、联
Chapter 5 The Periodic Table: Group2MgO
2 The elements in Group 17 of the Periodic Table are called the halogens. They form stable compounds with both metals and non-metals.The table gives some dat a about F2, HCl and CaF2F2HCI CaF2boiling point/K851882773relative formul a mass38.036.578.1(a)(i) State what is meant by the...
Which group of the periodic table of elements forms only 1+ ions? Why? Which group of the periodic table is known as the noble gases? List them. What is the name of the group 2 members in the modern periodic table? Why that name? Which of...
The size of the parent atom is always greater than that of the neutral atom. Answer and Explanation: Option (C) is correct We are given elements in group 2A (2) of the periodic table. The outermost valence shell of the element in group 2A ...
2 Elements in the same group of the Periodic Table often show trends in physical properties and similarities in chemical properties.(a)Name a group in the Periodic Table and briefly describe a trend in a physical property shown on moving down this group.name of group I (the alkali metals)tr...
aon descending a group in the periodic table such as lithium,sodium,potassium,rubidium,caesium,the size of the atoms increases due to the effect of extra shells of electrons being added;this outweighs the effect of increased nuclear charge 在周期表里下降一个小组例如锂,钠,钾,铷,铯,原子增量的...