Definition of Period A period is the name given to a horizontal row of the periodic table. The periodic table has seven periods. Apart from period 1, every period begins with an alkali metal and ends with a noble gas. Period 1 contains only two elements:hydrogenandhelium. Periods 6 and ...
In chemistry, the termperiodrefers to a horizontal row of theperiodic table. Elements in the same period all have the same highest unexcited electron energy level or same ground state energy level. In other words, each atom has the same number of electron shells. As you more down the period...
百度试题 结果1 题目What is a row of elements on the periodic table called? A. octave B. period C. group D. transition 相关知识点: 试题来源: 解析 B 反馈 收藏
In chemistry, the termperiodrefers to a horizontal row of theperiodic table. Elements in the same period all have the same highest unexcited electron energy level or same ground state energy level. In other words, each atom has the same number of electron shells. As you more down the period...
Periodic Table Metals | Definition, Reactivity & Examples from Chapter 28 / Lesson 45 72K What are metals? Learn the definition and different types of metals. See the reactivity and examples of metals present in the perio...
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Looking for the meaning or definition of the wordperiod? Here's what it means. Adjective Appropriatefor a givenhistoricalera. (of a film, or play, or similar)Set in and designed to evoke a particular historical period, especially through the use of elaborate costumes and scenery. ...
LAST_UPDATE_LOGIN VARCHAR2 32 Who column: indicates the session login associated to the user who last updated the row. ATTRIBUTE_CATEGORY VARCHAR2 30 Descriptive Flexfield: structure definition of the user descriptive flexfield. Cost Period Validation (CST_PERIOD_VALIDATIONS) Active ATTRIBUTE_CHAR1 ...
A period is a horizontal row in the periodic table. All the elements in the same row belong to the same period. The periods are numbered from 1 to 7...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can ...
In a row, the elements that will most likely lose electrons are those that are on the far left. These electrons have one of two electrons in valence... Learn more about this topic: Ionization Energy | Definition, Trends & Factors