The Halogens - Development of the Periodic Table

Question 1

What group are the halogens?

Answer 1

Group 7

Question 2

Name the main halogens

Answer 2

Fluroine, Chlorine, Bromine, Iodine

Question 3

Name the properties of halogens

Answer 3

Diatomic, non-metal, toxic

Question 4

What happens to the boiling/melting point as you go down the group?

Answer 4

They increase

Question 5

What happens to do the reactivity as you go down the group 7?

Answer 5

It decreases

Question 6

What happens if you increase the electron shielding?

Answer 6

The attraction from the nucleas from the electrons in the outer shell will decrease making it more easy to form an ion.

Question 7

Why does reactivity decrease in Group 7?

Answer 7

Because as you go down the atoms get larger and this increases electron shielding because the distance between the nucleas and electrons in the outer shell is getting further away. This makes it harder for larger atoms to gain an electron. Therefore the ability of the atom to attract electron to fill the outermost shell reduces, which means the reactiveness of the atom reduces.

Question 8

What do suffix do the halogens end with when they are an ion?

Answer 8

-ide

Question 9

How do displacement reactions work?

Answer 9

A more reactive halogen will replace a less reactive halogens. They will switch places after the reaction.