reactivity of group 1, 7 and 0

Question 1

what is group 1 also known as?

Answer 1

the alkali metals

Question 2

what is group 7 also known as?

Answer 2

the haolgens

Question 3

what is group 0 also known as?

Answer 3

the noble gases

Question 4

what is the trend in reactivity in group1?

Answer 4

the reactivity increases down the group

Question 5

what is the trend in reactivity in group7?

Answer 5

the reactivity decreases down the group

Question 6

are the noble gases reactive? why?

Answer 6

no, they have a full outer shell

Question 7

unreactive=

Answer 7

inert

Question 8

is it easier for group 1 metals to gain or lose electrons? why?

Answer 8

it is easier to lose electrons as group 1 metals have 1 outer electron

Question 9

is it easier for group 7 non-metals to gain or lose electrons? why?

Answer 9

it is easier to gain electrons as group 7 non-metals have 7 outer electrons

Question 10

what are the properties of group 1?

Answer 10

very reactive
shiny
softer down the group
similar reactivity
low density

Question 11

in group 1, what is the trend of the melting and boiling points?

Answer 11

it decreases down the group

Question 12

explain why the trend of reactivity in group 1 happens.

Answer 12

the reactivity decreases down the group. this is because:
as you go down the group, the size of the atoms increase making the distance between the positive nucleus and the negative outer electron increase meaning there is less electrostatic force of attraction making it easier to lose the outer electron