Group 7 metals Flashcards
What are group 7 metals known as ?
The halogens
What are the halogens ?
florine, chlorine, bromine , iodine , astatine
What do the halogens form ?
They form molecules that contain two atoms
What happens as you go down group 7 ?
They become less reactive, harder to gain electrons, higher melting and boiling points, higher relative atomic mass
What happens when halogens react with other non- metals ?
They share electrons and form covalent bonds, this is so they get a full outer shell
What do these reactions form ?
Form compounds with simple molecular structures
What can the halogens also form ?
They can also form halides which are 1- ions
What are the halides ?
Fluoride, bromide , chloride , iodine
What other reaction can take place ?
A reaction can take place between a halogen and the halide salt of a less reactive halogen which are called displacement reactions
What happens during this reaction ?
The less reactive halogen changes from a halide and becomes part of a salt
