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Chemistry
Atomic sturcture
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Emily Anderson
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Cards (6)
Electron structure (3)
-Electrons orbit
the
nucleus
in
electron shells
-First
shell has maximum of
2
-Second
shell has maximum of
8
-Third
shell has a maximum of
8
and so on
Group
names 1,2,7,0 (4)
-Group
1
:
alkali
metals
-Group
2
:
alkaline
earth
metals
-Group
7
:
halogens
-Group
1
/
8
:
Nobel
gases
Group number (1)
-Number
of
electrons
in
outer
shell
Periods (1)
-Number
of
electron
shells
Describe the similarities and differences between plum pudding model and the nuclear model of an atom. (6)
SIMILARITIES
-Both have
electrons
-Both have
positive
charge
-Don’t have
neutrons
-Over
all
charge
0
DIFFERENCES
-PP:
electrons
scattered
-NM
:
electrons
on a
shell
-PP
:
ball
of
positive
charge
-NM
: has a
nucleus
What is atomic number? (1)
-Number
of
protons
