The Periodic Table

Use the Periodic Table to help you answer this question.

Which word correctly describes the horizontal rows in the Periodic Table?

[1]

Elements in the same period of the Periodic Table have the same number of

[1]

The table lists properties of some of the elements in Group 7 of the Periodic Table.

Halogen	Symbol	Boiling point in $∘C^\circ\text{C}$	Covalent radius in $pm\text{pm}$
fluorine	$F\text{F}$	-188	71
chlorine	$Cl\text{Cl}$	-34
bromine			114
iodine	$I\text{I}$	184	133

Complete the table by giving:

[3]

Sodium is a highly reactive Group 1 metal that is typically stored submerged in paraffin oil.

Sodium stored under paraffin oil

Suggest why sodium is stored under oil rather than being exposed to the air.

[2]

The Periodic Table Questions