Скачать с ютуб P block elements class 11 - Boron Family | One Shot Hindi | JEE CBSE NCERT NEET в хорошем качестве

P block elements class 11 - Boron Family | One Shot Hindi | JEE CBSE NCERT NEET

➡️Free NCERT notes:http://bit.ly/Class11ChemistryPBlockE... ➡️Free NCERT Solutions:http://bit.ly/Class11ChemistryPBlockE... ➡️Watch the entire playlist for: ➡️Join Telegram:http://bit.ly/TelegramGroupForClass11 ➡️Ask Doubts: https://www.examfear.com/question/ Timestamps: 0:00 Introduction 0:43 P-Block elements 2:02 Importance of p-block elements 3:21 Properties of p-block elements. 7:38 Periodic table Trends 8:27 Group-13 Boron Family 11:22 Group-13:Trends Physical properties 11:43 Boron Family:Electronic Configuration 14:15 Group 13 Trends:Atomic &Ionic radii 21:13 Group 13 Trends Density 22:58 Group 13 Trends: Melting & Boiling point 25:56 Group 13 Trends: Ionization Enthalpy 27:57 Group 13 Trends: Electronegativity 30:12 Group 13 Trends: Metallic character 30:44 Group 13 Trends: Reducing property 32:27 Boron family: Oxidation State 39:31 Boron family: Nature of Compounds 42:10 Group 13 Trends: Chemical properties 42:49 Group 13 Trends: Reaction with Air 48:45 Group 13 Trends: Reaction with acids 1:00:10 Group 13 Trends: reaction with Base 1:04:14 Group 13 Trends: reaction with halogens 1:07:35 Boron family: Aluminium Halides 1:08:34 P block: Diagonal relationship There are six groups of p–block elements in the periodic table numbering from 13 to 18. Boron, carbon, nitrogen, oxygen, fluorine and helium head the groups. Their valence shell electronic configuration is ns2np1.Boron in available limited quantities. Aluminium is readily available on our planet. It is the third most abundant element available. P-block metals have classic metal characteristics: they are shiny, they are good conductors of heat and electricity, and they lose electrons easily. Generally, these metals have high melting points and readily react with nonmetals to form ionic compounds.While moving down the group, atomic radius of elements increases. In Boron family, Atomic radius of Ga is less than AI.This is due to the variation of inner core of electronic configuration. The ionisation enthalpy decreases from top to bottom, but, in case of, Boron family, there is an increase and decrease in ionisation energies from Al to Tl. Because d and f electrons have low shielding effect. Electronegativity decreases from B to Al and then it increases this is because of difference in atomic size of elements. The outer electronic configuration of group 13 elements in ns2np1. So,oxidation state is +3. Boron and Aluminium shows oxidation state of +3 whereas, other elements of the group shows oxidation state of +3 and +1. But+1 is most stable oxidation state. Boron family reacts with halogens to form trihalides. Boron does not react with air. At high temperature boron burns in air forming B2O3. Aluminium reacts with air and forms thin layer of oxide on its surface. It prevents further oxidation of Al2O3. At very high temperature they react with nitrogen forming nitride. Boron does not react with acids and alkalies even at moderate temperature; but aluminium dissolves in mineral acids and aqueous alkalies and thus shows amphoteric character . LearnoHub.com (formerly called ExamFear Education) is a Free Education platform with more than 6000 videos on Physics, Chemistry, Maths, Biology, English, Science experiments, tips & tricks and motivational videos for Classes 6 to 12. Learn for Free! Website: http://www.learnohub.com Facebook: https://bit.ly/LearnoHubFB Instagram: https://bit.ly/LearnoHubInsta Get Our Videos in Pendrives: Class 11 - https://bit.ly/LHPenDrive11 Post your doubts here: https://www.examfear.com/question/ Join our Telegram Group: LearnoHub - 11: https://t.me/LearnoHub11 About the Teacher: Roshni Mukherjee, the Founder-Educator at LearnoHub has been building this free learning platform since 2011. She has been recognised as one of the 100 Women Achievers of India by the Ministry of Women & Child Development and felicitated by the President of India in 2016. Roshni has been invited by Google to speak at Global Education Symposium 2017 held at Google Headquarters, California. Limca Book of Records also recognized our work. Watch Roshni's Tedx Talk to know more about her journey: https://www.youtube.com/watch?v=v2sW_... #LearnoHubChemistry #SabkoSamajhAayega #FREEhaiParBESThai #CBSEClass11Chemistry Join us and let us together build this Free Learning Platform! We will surely ensure that you enjoy the real learning with us. Copyright © All rights reserved. LearnoHub | ExamFear Education