Group 7 Halogens

Identify the elements located in Group 7 of the periodic table as the halogens.

Understand that halogens share highly similar reactions precisely because they all possess seven electrons in their outer shell.

Describe halogens primarily as non-metals that naturally consist of diatomic molecules made of tightly bound pairs of atoms.

Describe the chemical nature and structure of the specific compounds formed when chlorine, bromine, and iodine actively react with various metals and non-metals.

Explain the continuous trends regarding how an element situated further down Group 7 will possess a higher relative molecular mass, higher melting point, and higher boiling point.

Explain the trend where the overall chemical reactivity of the elements noticeably decreases when moving steadily down Group 7.

Describe the specific displacement rule stating that a more highly reactive halogen can successfully displace a less reactive halogen from an aqueous solution containing its salt.

Explain how the specific properties and displacement behaviours of the elements in Group 7 heavily depend on their outer shell containing seven electrons.

Predict the physical properties and reactive displacement outcomes of specific halogens from observed trends moving down the group.