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PERIODIC TABLE daing nurfarah raihana bt mohd kahar - Coggle Diagram
PERIODIC TABLE
daing nurfarah raihana bt mohd kahar
Arrangement
Increasing atomic number
electrons in outer energy levels
Similar Chemical properties
Ion formed
group1: 1+
group2: 2+
group3: 3+
group4: x
group5:3-
group6: 2-
group7: 1-
group8: x
Periods
Rows
1 to 7
Group
columns
1 to 7
group 8 = 0
Families
group 1
alkali metals
more reactive down the group
group 2
alkaline earth metals
group 7
halogens
more reactive moving up the table
Metalloid
metal properties
non-metal properties
antimony
germanium
polonium
Non metals
right
properties
poor conductor of electricity
Carbon, Graphite good conductor
low melting point
high melting point
carbon
silicon
poor conductor of heat
brittle
Metals
left & middle
properties
good conductor of electricity
high melting point
mercury low melting point
good conductor of heat
shiny
malleable
hammered into shape
ductile
sonorous
ring when struck
alkali metals with low melting point not sonorous
metallic character
increases down group
outer atom further from nucleus
removed more easily
react to form ions