Group 7 Elements Flashcards
(12 cards)
What are the group 7 elements called?
The halogens
What properties do all the halogens have?
All non-metals with coloured vapours
What is fluorine?
A very reactive, poisonous, yellow gas
What is chlorine?
A fairly reactive poisonous, dense, green gas
What is bromine?
A dense, poisonous, red-brown volatile liquid
What is iodine?
Iodine is a dark grey crystalline solid or a purple vapour
As you go down group 7, does reactivity increase or decrease?
Decrease
As you go down group 7, does the melting and boiling point, and the atomic mass increase or decrease?
Increase
What can the halogens form?
Molecular compounds
What ions do the halogens form, and what are they called
-1 ions called halides
What does a displacement reactions occur between?
A more reactive halogen and the salt of a less reactive one
