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chemistry 1.4 (group 0 elements (going down group 0 (boiling point…
chemistry 1.4
group 0 elements
noble gasses
full outer shell
do not reactive
exist as monoatomic not bonded
colourless
non-flammable
going down group 0
boiling point increases
increase in relative atomic mass
group 1 elements
alkali metals
very reactive
1 electron on outer shell
soft
low density
going down group 1
increasing reactivity
electron is more easily lost
lower melting point
higher relative atomic mass
metals and non metals
metals
form + irons when react
most elements are metals
metallic bonding
strong
malleable
good conductors
high boiling points
elements react for a full outer shell
electrons that are closer to the nucleus have a stronger attraction
transition metals
between groups 2&3
typical metals
good conductors
shiny
dense
strong
group 7 elements
halogens
produce poisonous gasses
exist as pairs of atoms
going down group 7
less reactive
harder to gain electrons
higher boiling point
higher relative atomic mass