YOU TUBE LINKS FOR PERIODIC TABLE
REACTIVITY OF ALKALI METALS
https://www.youtube.com/watch?v=0KonBvfnzdo
REACTIVITY OF HALOGENS
https://www.youtube.com/watch?v=EvtyMr5EvBY
https://www.youtube.com/watch?v=yW_C10cEzMk&t=3s
DISPLACEMENT REACTIONS OF HALOGENS
https://www.youtube.com/watch?v=TMwpLNZJmQo
REACTIVITY SERIES OF METALS
https://www.youtube.com/watch?v=fJ6cDG6Fbeo
TRANSITION METALS
https://www.youtube.com/watch?v=m0Uj7mSC6HU