| What do all Group 7 Element share? | -They all have 7 Electrons in the Outer Shell, therefore having Similar Chemical Properties |
| How do Group 7 Elements Exist as [Formula] | -They are always Diatomic.
-This simply means its [Cl² F² I²]
-This has them have a Covalent Bond, to give Both Atoms a Full Outer Shell |
| What happens with the Boiling Point and Melting Point as you go down Group 7? | -It Increases as you travel down the Group |
| At Room Temperature, what state, and Appearance, is:
-Chlorine
-Bromine
-Iodine | -Cl² is Reactive, Poisonous, and is a Green Gas
-Br² is Poisonous, Red-Brown Liquid which gives off an Orange Vapor at RT
-I² is a Dark Grey Crystalline Solid which gives a Purple Vapor when Heated |
| What is the Reactivity Trend as you go down Group 7? Why is this? | -As you go down the Group, it becomes Less Reactive
-This is because a Halogen needs 1 Electron to have a Stable Electronic Structure [Which also forms a -1 Ion]
-So as you go down the Group, it becomes Harder to Attract that Electron, because of the large Atomic Radius [Attraction from the Positive Nucleus to the Negative Electron] |
| What happens when a Halogen reacts with an Alkali Metal? | -Simply another Salt is made, although its called a Metal Halide |
| Give an example with
-Sodium + Chlorine
-Potassium + Bromine
Balanced Equation as Well | -Sodium + Chlorine ---> Sodium Chloride
-[2Na] + [Cl²] ----> [2NaCl]
-Potassium + Bromine ---> Potassium Bromide
-[2K] + [Br²] ---> [2KBr] |
