C1 - Group 7 Elements
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9 Terms
What group are halogens?
Group 7
What is the name for group 7 elements?
Halogens
What happens as you go down group 7?
Higher relative atomic masses.
Higher melting and boiling points.
Less reactive.
How many electrons do halogens have in their outer shells?
7
Are all halogens diatonic elements?
Yes, all halogens are diatonic elements, meaning that they all exist as molecules which are pairs of atoms.
How do halogens react in covalent reactions?
They share electrons with non-metals to get a full outer shell.
How do halogens react in ionic reactions?
They gain electrons from metals to gain a full outer shell.
What are halogens that form 1- ions to bond with metals called?
Halides
What are displacement reactions?
When a more reactive non-metal replaces a less reactive non-metal in an ionic compound.
