Group 7

Question 1

What are group 7 elements known as

Answer 1

Halogens and they are all non metals

Question 2

How many electrons do they have in their outer shell

Answer 2

7

Question 3

What do halogens consist of

Answer 3

Molecules made of pairs of atoms

Question 4

What happens to reactivity as you go down the group and why

Answer 4

It decreases because the outer shell gets further away from the nucleus

Question 5

What happens to boiling and melting point and molecular mass as you go down the group

Answer 5

They all increase

Question 6

What do halogens react with metals to produce

Answer 6

Ionic salts

Question 7

What else happens when halogens react with metals

Answer 7

The halogen atom gains one electron to form a halide ion with a negative charge