First 20 Elements | Valency trick | Electronic Configuration | Easy Method | Chemistry

First 20 Elements | Valency trick | Electronic Configuration | Easy Method | Chemistry Hello guys welcome to my channel @mathssciencetoppers In this video we are going to discuss about first 20 elements electronic configuration and it's valency.. #valencytrick #first20elements #electronicconfiguration #class10th #chemistry #easymethod #science #mathssciencetoppers Please give your love and support Don't forget to like subscribe share and press the bell 🔔 icon for the latest update.... Thanks for watching.... Team - Maths science toppers