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electron configurations
periodic chart
14
Other
03/18/2004
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Term
Dimetri Mendelieu
 Definition
constructed the first periodic charte
1. increasing atomic mass
2. chemical and physical properties
Term
modern periodic chart
 Definition
1. arranged by henry mosely
2. based on mendelieu chart, but organized elements by order of atomic #
Term
period
 Definition
horizontal rows
Term
groups
 Definition
vertical columns
Term
group 1
 Definition
alkali metals
Term
group 2
 Definition
alkaline earth metals
Term
group 18
 Definition
noble gases
Term
group 17
 Definition
halogens
Term
group 3-12
 Definition
transition elements
Term
group 16
 Definition
oxygen group
Term
group 15
 Definition
nitrogen group
Term
group 13
 Definition
aluminum group
Term
group 14
 Definition
carbon group
Term
reactivity
 Definition
the ability to react in a chemical way with another element or compound