group 0 elements Flashcards
1
Q
how many electrons do group 0 elements have on their outer shell?
A
8 (other than helium)
2
Q
what is special about noble gases?
A
they have a full, stable shell of electrons
3
Q
what are group 0 elements at room temp?
A
colourless gases
4
Q
inert
A
unreactive
5
Q
list 3 properties of group 0
A
non-flammable
inert
gas at room temp
6
Q
describe the trend in boiling points going down the group 0?
A
it increases
7
Q
describe the trend in atomic mass going down the group 0?
A
it increases
8
Q
why does the boiling point increase going down the group?
A
there is an increase in the number of electrons in each atom, leading to greater intermolecular forces between them which need to be overcome
