Group 7 Chemical Properties Flashcards
1
Q
What do halogens tend to do to complete their outer shell?
A
Remove electrons from other elements.
2
Q
What is oxidisation?
A
When an element loses an electron.
3
Q
What do we call elements that remove an electron from another element?
A
Oxidising agents.
4
Q
What elements in group 7 are the strongest oxidising agents?
A
The most reactive elements at the top of the group.
5
Q
Why are elements at the top of group 7 the strongest oxidising agents?
A
They are smaller and have fewer shells, so the attraction between the nucleus and the electron that completes its outer shell is strong.
6
Q
Why do the melting and boiling points increase down the group?
A
The intermolecular forces get stronger and require more energy to break.
