Chemistry- Group 7 elements (year 9) Flashcards
1
Q
What are the group 7 elements known as?
A
The halogens
2
Q
Are halogens metal or non-metal?
A
all non-metals
3
Q
What happens as you go down group 7?
A
The halogens become less reactive because they are further from the nucleus, they have higher melting ad boiling points
4
Q
How many electrons do the group 7 elements have?
A
7 electrons
5
Q
What can halogens form?
A
molecular compounds
6
Q
How can halogens share electrons?
A
with covalent bonding with other non-metals
7
Q
What else can halogens form?
A
ionic bonds with metals
8
Q
when can a displacement reaction occur?
A
between a more reactive halogen and the salt of a less reactive one
