Groups of the Periodic Table

• How are the group number and the number of electrons in the outer shell of an element related?

  They are the same.
• What kind of ions do metals form?

  metal atoms lose electrons to form positive ions
• Where are non-metals on the periodic table?

  on the right
• State three trends of the reaction of sodium and water:

  • Sodium burns with a bright white flame
  • Sodium reacts vigorously with water
  • Sodium produces hydrogen when reacting with water
• How do the boiling points of halogens change as you go down the group from fluorine to astatine?

  Boiling point increases
• What is the charge of the ions that halogens form when they react with metals?

  The halide ion will have a negative charge and the metal ion will have a positive charge.
• State the products of the reaction of sodium with water:

  Sodium hydroxide and hydrogen
• Name three trends as you go down Group 1

  • Melting points decrease
  • they get more reactive
  • Higher relative formula mass
• predict whether iodine is displaced by chlorine in a solution of potassium iodine?

  Yes because chlorine is more reactive as it is higher up the group
• What is the trend in boiling points as you go down Group 0?

  Increasing