Group ( periodic table )Roman, TheChemistry, Applied
Periodic Table: Modern chemists have assigned each of the 118 chemical elements known currently to a slot in the periodic table. The columns of this table are called groups, while the rows are termed 'periods'. Some of the groups have special names because all the element...
Group 2 of the periodic table consists of six elements. Except, they a... 01:11 beryllium isnot very familiar because (i). It is not very abundant ... 01:31 Mg is the sixth most abundant element(by weight) in the earth's crust... 01:30 Calcium is the fifth most abundant element...
26 Which statement explains why elements in Group VIll of the Periodic Table are unreactive?C A They are monatomic gases. B They form stable diatomic molecules. C They have a full outer shell of electrons. D They share electrons with each other. 相关知识点: 试题来源: 解析 C 反馈 ...
A3 The 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...
Two elements 'P' and 'Q' belong to the same period of the modern periodic table and are in group 1 and group 2 respectively. Compare the following characteristics in tabular form. number of electrons in their valence shell. View Solution ...
Which group of the periodic table is commonly referred to as the 'noble gases'? 19PRACTICE PROBLEM Historically, noble gases were considered completely inert. Which modern discovery changed this understanding? 20PRACTICE PROBLEM Which series of elements is known as the lanthanides?
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.nameof groupthekametals Densityincreases...
3 Chlorine is in Group VII of the Periodic Table(a)Two isotopes of chlorine are chlorine-35 and chlorine-37(i)State why these two isotopes of chlorine have the same chemical properties.[2](ii) Complete the table to show the number of electrons, neutrons and protons in each atom and ion...
<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