Metals and Non-metals in the periodic table

• Who made an early periodic table?

  Mendeleev
• How are elements arranged in the modern periodic table?

  Elements are arranged in order of atomic number in periods and groups
• What do electronic structures model?

  They model how electrons are arranged in atoms
• Where are metal elements located in the periodic table?

  • On the left of a stepped line starting at B-Al-Si
• Where are non-metal elements located in the periodic table?

  • On the right of the stepped line
• Which groups in the periodic table contain metals?

  Groups 1 and 2
• How many electrons do atoms of group 1 elements have in their outer shell?

  One electron
• How many electrons do atoms of group 2 elements have in their outer shell?

  Two electrons
• Which groups in the periodic table contain non-metals?

  Groups 6, 7, and 0
• How many electrons do atoms of group 7 elements have in their outer shell?

  Seven electrons
• How many electrons do atoms of group 0 elements have in their outer shell, except helium?

  Eight electrons
• How are the reactions of elements related to their outer shell electrons?

  The reactions are related to the number of electrons in their outer shells
• What do atoms of metal elements do in their reactions?

  They give away electrons to form positive ions
• Why are the ions formed from metal elements very stable?

  Because they have a full outer electron shell
• What do atoms of non-metal elements do in some of their reactions?

  They gain electrons to form negative ions
• Why are the ions formed from non-metal elements very stable?

  Because they have a full outer electron shell