1.7 - Electron Structures and the Periodic Table

• how can groups in the periodic table be divided

  into 4 blocks - s block, p block, d block, and f block
• s-block

  groups 1 and 2 and Helium

  outer electron is in the s orbital
• p-block

  groups 3,4,5,6,7, and 0 (minus Helium)

  outer electron is in the p orbital
• d-block

  transition metals

  outer electron in is d orbital
• f-block

  lanthanoids and actinoids

  outer electron is in f orbital
• what determines the chemical properties of elements

  the group they're in

  electronic structure - especially outer shell electrons as they determine how an element reacts