reactivity of group 1, 7 and 0

Question 1

halogens __ in size down the group

Answer 1

increase

Question 2

why do halogens gain 1 electron?

Answer 2

they have 7 electrons on the outer shell, so by gaining one more they become stable.

Question 3

define ‘electrostatic attraction’

Answer 3

affected by the distance between two oppositely charged particles.

Question 4

as you go down the group the reactivity ___

Answer 4

decreases

Question 5

when group 7 elements react, they ___ 1 outer electron

Answer 5

gain

Question 6

as you go down the group:
1.greater ___ between nucleus and incoming electron.

Answer 6

distance

Question 7

there is ___ ___ between the nucleus and the incoming electron as you go down the group (more shells there are/more shielding between the nucleus and the outer electron)

Answer 7

less attraction

Question 8

chemical properties of group 0

Answer 8

•have full outer shells
•they do not bond
•they can exist on their own and be monatomic