Group 7 of periodic table

Question 1

What are Group 7’s known as?

Answer 1

Halogens

Question 2

What are Group 7’s ?

Answer 2

Non-metals and poisonous

Question 3

How many electrons do they have on their outer shell?

Answer 3

7

Question 4

What are Halogens?

Answer 4

Diatomic

Question 5

What ions do Halogens form during reactions?

Answer 5

Halide Ions

Question 6

State & appearance of fluorine at room temperature

Answer 6

Yellow Gas

Question 7

State & appearance of chlorine at room temperature

Answer 7

pale green-yellow gas

Question 8

State & appearance of bromine at room temperature

Answer 8

red-brown liquid

Question 9

State & appearance of iodine at room temperature

Answer 9

grey solid

Question 10

Characteristic of Fluorine?

Answer 10

Very reactive, poisonous gas

Question 11

Characteristic of chlorine?

Answer 11

Reactive, poisonous and dense gas

Question 12

Characteristic of bromine?

Answer 12

Dense red-brown volatile liquid

Question 13

Characteristic of iodine?

Answer 13

Shimmery, crystalline solid that sublimes to form a purple vapour

Question 14

Colour of chlorine in solution?

Answer 14

Pale Green

Question 15

Colour of bromine in solution?

Answer 15

orange

Question 16

Colour of iodine in solution?

Answer 16

dark brown

Question 17

What happens to melting and boiling points of the elements as you go down

Answer 17

Increase due to increasing intermolecular forces as the atoms become larger, so more energy is required to overcome these forces

Question 18

What happens to reactivity as you go down the group?

Answer 18

weakens because outer shell is further away from nucleus so harder to attract an electron to fill outer shell