video1.0<iframe src="https://www.loom.com/embed/89e483ab60324b41878ccebb0323a923" frameborder="0" width="1280" height="960" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>9601280Loomhttps://www.loom.com9601280https://cdn.loom.com/sessions/thumbnails/89e483ab60324b41878ccebb0323a923-00001.gif1077Atomic Structure 9 & 10 - Activity and Half life