Class 11 Exam > Class 11 Videos > History of Periodic Table - Elements & Periodicity
History of Periodic Table - Elements & Periodicity Video Lecture - Class 11
FAQs on History of Periodic Table - Elements & Periodicity Video Lecture - Class 11
| 1. What is the history of the periodic table? |  |
Ans. The periodic table is a tabular arrangement of chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. It was first proposed by Dmitri Mendeleev in 1869. Mendeleev's periodic table arranged elements in order of increasing atomic weight and grouped them based on similar properties. Over time, the periodic table has gone through several modifications and improvements to reflect the discovery of new elements and advancements in atomic theory.
| 2. How are elements arranged in the periodic table? | |
Ans. Elements in the periodic table are arranged in order of increasing atomic number, which represents the number of protons in an atom's nucleus. The table consists of rows called periods and columns called groups. Elements in the same period have the same number of electron shells, while elements in the same group have similar chemical properties due to having the same number of valence electrons.
| 3. What is the significance of the periodic table? | |
Ans. The periodic table is of immense significance in the field of chemistry. It allows scientists to organize and classify elements based on their properties, which helps in understanding and predicting their reactivity, behavior, and chemical reactions. The periodic table also provides a systematic way to identify and study the relationships between different elements, facilitating the development of various chemical theories and principles.
| 4. How has the periodic table evolved over time? | |
Ans. The periodic table has evolved significantly since its inception. Initially, Mendeleev's periodic table arranged elements based on their atomic weight and properties. However, the discovery of isotopes and advancements in atomic theory led to the modification of the table to reflect the elements' atomic number instead. The modern periodic table also incorporates the concepts of electron configuration and quantum mechanics, providing a more accurate representation of the elements and their properties.
| 5. How many elements are currently in the periodic table? | |
Ans. As of now, the periodic table consists of 118 confirmed elements. These elements range from hydrogen (atomic number 1) to oganesson (atomic number 118). However, elements beyond atomic number 118 have been synthesized in laboratories, but their stability and properties are still being studied.
Related Exams
About this Video
|
Dec 27, 2024 Last updated |
History of Periodic Table - Elements & Periodicity for Class 112024 is part of Class 11 preparation. The notes and questions for History of Periodic Table - Elements & Periodicity
have been prepared according to the Class 11 exam syllabus. Information about History of Periodic Table - Elements & Periodicity covers all important topics
for Class 112024 Exam. Find important definitions, questions, notes, meanings, examples, exercises
and tests below for History of Periodic Table - Elements & Periodicity.
Introduction of History of Periodic Table - Elements & Periodicity in English is available as part of our Class 11 preparation & History of Periodic Table - Elements & Periodicity in Hindi
for Class 11 courses. Download more important topics, notes, lectures and mock test series for Class 11 Exam by
signing up for free.
Description
Video Lecture & Questions for History of Periodic Table - Elements & Periodicity Video Lecture - Class 11 - Class 11 full syllabus preparation | Free video for Class 11 exam.
Information about History of Periodic Table - Elements & Periodicity
Here you can find the History of Periodic Table - Elements & Periodicity defined & explained in the simplest way possible. Besides explaining types of History of Periodic Table - Elements & Periodicity
theory, EduRev gives you an ample number of questions to practice History of Periodic Table - Elements & Periodicity tests, examples and also practice Class 11 tests.
|
Explore Courses for Class 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
mock tests for examination
,History of Periodic Table - Elements & Periodicity Video Lecture - Class 11
,ppt
,Free
,study material
,MCQs
,Sample Paper
,History of Periodic Table - Elements & Periodicity Video Lecture - Class 11
,Important questions
,Previous Year Questions with Solutions
,Viva Questions
,practice quizzes
,History of Periodic Table - Elements & Periodicity Video Lecture - Class 11
,Exam
,Objective type Questions
,Semester Notes
,Summary
,video lectures
,past year papers
,shortcuts and tricks
,Extra Questions
,
Study History of Periodic Table - Elements & Periodicity on the App
Students of Class 11 can study History of Periodic Table - Elements & Periodicity alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the History of Periodic Table - Elements & Periodicity,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of History of Periodic Table - Elements & Periodicity is prepared as per the latest Class 11 syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup