Metals and Non-Metals | Physical and Chemical properties of Metals and Non-Metals | Reaction of Metal and Non Metals with Air
Metals and Non- Metals full explaination Class 10 Science Chapter 3 - Metals and non metals Element: Is a substance that can’t be broken into more simpler substances. Elements are classified into different categories: -: Metals :- Metals Metals are those elements which have 1,2 or 3 valence electrons in their valence shell. Example : atomic no. of Na =11 Electronic confugration =2,8,1 They always loose electrons to form electropositive ions. Na – 1electron ------Na + :- Non Metals :- Non-Metals -> Non metals are those elements which have 4,5,6 or 7 valence electrons in their valence shell and they always gain electrons to form electronegative ions. Cl(17) – 1 electron --------Cl- Electronic Configuration = 2,8,7 Video Explanation of Lesson Metals and Non-Metals II) Physical Properties Of Metals and Non Metals 1. malleability: process of beating into thin sheets Metals :are malleable. Gold and silver is the most malleable metals. Malleability Non metals :non malle...