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Cards (28)
electron shell goes
2-8-8...
Atomic
number = # of
protons
1 proton is equal to
1
atomic weight
Halogens
-Extremely reactive non-metals
Alkaline Earth Metals - second most reactive metals
Noble gases
- non reactive fellas.
Vaence Shell - Outer shell
Reactions only occur with the
valence
shell
Valence Shells want stability either 8 or 2 ring or 8 or 2 total
Protons attract
electrons
the
farther
electrons are from nucleus the
weaker
their bond
Bigger metals
are more
reactive
and
loose electrons
Smaller non-metals are more
reactive
and
steal
electrons
Atoms
share
electrons
rather than give them
away
Cation -
+
Anion
- -
You must
round up
the atomic weight to find the # of electrons
Alkali
-
Metals
,
Reactive
, one
valence
electron
Alkalaine
- Metals,
Reactive
, 2
valence
electrons
Halogens
-
Reactive
,
non metals
,
7 valence electrons
Noble gases
- No
reaction
, Full
valence
shell
More electrons makes atom squeeze
The further elements to the right, the smaller they are in radius
Metals
get rid of
electrons
Non-metals steal
electrons
Number of Electrons change in Ions
Lewis dot diagrams
-
Name
+
dots
around
2NA = The two means DOUBLE IT