group 0 Flashcards
1
Q
what is group zero known as
A
- the noble gasses
2
Q
at room temperature what color are all of the gasses ?
A
colorless
3
Q
why are the noble gasses all monotonic
A
- because they’re all made up of single atoms
4
Q
why are the noble gasses inert (unreactive)
A
- because they all have full outer shells
- meaning they dont give or gain electrons easily
5
Q
why are the noble gasses non flammable
A
because they are inert
6
Q
name the group zero elements
A
- helium
- neon
- argon
- krypton
- xenon
- radon
7
Q
as you go down the group what happens to the
- boiling point
- melting point
- density
A
increase
8
Q
how to estimate the densities of group 0 elements
eg use the densities of helium (0.2kg/m3) and argon (1.8kg/m2) to estimate the density of neon
A
- (0.2 + 1.8)/2=1
- neon should have a density around 1kg/m3
9
Q
why do group 0 elements react in similar ways
A
- they all have full outer electron shells
