The Halogens

Question 1

What are Halogens?

Answer 1

Halogens are elements in Group 7 of the periodic table.

Question 2

What happens when the atomic number increases?

Answer 2

As the atomic number of the halogens increases, the elements are more reactive and have a darker colour and a higher boiling point.

Question 3

What are the properties of chlorine?

Answer 3

At room temperature, its a green gas and its boiling point is -34 degrees/c

Question 4

What are the properties of bromine?

Answer 4

At room temperature, it’s a red-brown liquid with an orange vapour.

Question 5

What are the properties of Iodine?

Answer 5

At room temperature, its a dark grey crystalline solid which give off a purple vapour when heated.

Question 6

Why are Halogens less reactive as you go down group 7?

Answer 6

It get harder to attract the extra electron to fill the outer shell when its further away from the nucleus.