Valency || Hacks || Chemistry || First 20 Elements Discover the ultimate hack to quickly identify the valency of the first 20 elements in the periodic table, explained in simple and clear pidgin English! This video breaks down the concept of valency in a way you’ll never forget—whether you're a student preparing for exams or just curious about chemistry. I’m Instructor Alison, and I’m passionate about making science easy and fun for everyone. If this video helped you, don’t keep the knowledge to