group 7 reactivity

• What group of elements are the halogens found in?

  Group seven
• How does the reactivity of halogens change down group seven?

  It decreases as you move down
• What happens when a more reactive halogen meets a less reactive halogen in solution?

  The more reactive halogen displaces the less reactive one
• What happens when a halogen reacts with a metal?

  The halogen gains one electron
• Why is fluorine the most reactive halogen?

  It has a stronger attraction for electrons
• What two factors make chlorine less reactive than fluorine?

  Greater distance and increased shielding
• How does increased distance affect electron attraction in chlorine?

  It reduces the attraction to the nucleus
• What is shielding in the context of electron attraction?

  Repulsion of outer electrons by inner electrons
• How does increased shielding affect chlorine's reactivity?

  It makes chlorine less reactive than fluorine
• What is a displacement reaction?

  A reaction where one element displaces another
• What happens when fluorine reacts with sodium bromide?

  Fluorine displaces bromine from the solution
• What happens when lithium chloride reacts with bromine?

  No reaction occurs
• What does the term "aqueous solution" mean?

  It means dissolved in water
• What does it mean for a halogen to displace another halogen?

  It means to push out another halogen from a compound