Group 7 Chemical Properties Flashcards
What do halogens tend to do to complete their outer shell?
Remove electrons from other elements.
What is oxidisation?
When an element loses an electron.
What do we call elements that remove an electron from another element?
Oxidising agents.
What elements in group 7 are the strongest oxidising agents?
The most reactive elements at the top of the group.
Why are elements at the top of group 7 the strongest oxidising agents?
They are smaller and have fewer shells, so the attraction between the nucleus and the electron that completes its outer shell is strong.
Why do the melting and boiling points increase down the group?
The intermolecular forces get stronger and require more energy to break.