Group 7 Flashcards
1
Q
What are group 7 elements known as
A
Halogens and they are all non metals
2
Q
How many electrons do they have in their outer shell
A
7
3
Q
What do halogens consist of
A
Molecules made of pairs of atoms
4
Q
What happens to reactivity as you go down the group and why
A
It decreases because the outer shell gets further away from the nucleus
5
Q
What happens to boiling and melting point and molecular mass as you go down the group
A
They all increase
6
Q
What do halogens react with metals to produce
A
Ionic salts
7
Q
What else happens when halogens react with metals
A
The halogen atom gains one electron to form a halide ion with a negative charge
