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19 Cards in this Set
- Front
- Back
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WHY IS AN ATOM'S ELECTRON ARRANGEMENT IMPORTANT?
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AN ELEMENT'S PROPERTIES SUCH AS CONDUCTIVITY AND REACTIVITY WIHT OTHER SUBSTANCES ARE THE RUSULT OF THAT ARRANGMENT.
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WHAT ARE ENERGY LEVELS?
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REGIONS AROUND THE NUCLEUS OF AN ATOM WHERE ELECTRONS MAY BE FOUND.
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WHAT IS THE LEAST AMOUNT OF ENERGY LEVELS AN ATOM CAN HAVE?
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1
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THE ELECTRONS IN THE OUTERMOST ENERGY LEVEL ARE CALLED?
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VALENCE ELECTRONS
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WHY ARE THE VALENCE ELECTRONS SO IMPORTANT?
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THEY DETERMINE HOW AN ELEMETN WILL REACT WITH OTHER SUBSTANCES.
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ATOMS OF ELEMENTS GROUP 1 & 2 HAVE THE SAME # OF VALENCE ELECTRONS AS THEIR????
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GROUP #'S
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ATOMS OF ELEMENTS IF GROUP 13-18 HAVE ________ VALENCE ELECTRONS THAT THEIR GROUP #.
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10 FEWER
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ATOMES OF ELEMENTS IN GROUP 3-12 DO NOT ______________
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FOLLOW A GENRAL RULE
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HELIUM ATOMS IN GROUP 18 ONLY HAVE ____ VALENCE ELECTRONS
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2
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WHY IS HYDROGEN USUALLY PLACED ABOVE GROUP 1 ?
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VERY REACTIVE AND LIKE ATOMS OF ALKALI METALS ATOMS OF HYDROGEN ALSO HAVE ONE VALENCE ELECTRON.
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WHY ARE LANTHANIDES AND ACTINIDES PLACED AT THE BOTTOM OF THE PERIODIC TABLE?
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KEEPS THE TAKLE FROM BEING TOO WIDE
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REMEMBER ALL THE ATOMS IN A PERIOD HAVE THE SAME # OF ELECTRON ENERGY LEVELS AND THEY FOLLOW A PATTERN....../
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PERIOD 1 HAS 1 ENERGY LEVEL
PERIOD 2 HAS 2 ENERGY LEVEL ETC...... |
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GROUPS 1 & 2 VERY REACTIVE METALS: THESE ATOMS NEED TO GAIN, SHARE OR LOSE ONLY___ OR ____ ELECTRONS TO HAVE A FILLED OUTER LEVEL SO THEY TEND TO BE VERY____?
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ONE-TWO-REACTIVE
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GROUP 1: _____ METALS ARE THE MOST REACTIVE OF THE METALS.
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ALKALI
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ELEMENTS IN GROUP 17 HALOGENS ARE THE MOST REACTIVE NONMETALS NEEDING ONLY TO GAIN ______ ELECTRON.
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1 VALENCE
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ELEMENTS OF GROUP 18 NOBLE GASES UNREACTIVE NONMETALS.....UNDER NORMAL CONDITIONS THEY DO NOT REACT WITH OTHER ELEMENTS SINCE THEY HAVE A____SET OF ELELCTRONS.
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8
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ROWS/PERIODS- ELEMENTS IN THE SAME ROW HAVE THE SAME NUMBER OF _______ ______
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VALENCE ELECTRONS
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COLUMN/GROUPS-ELEMENTS HAVE THE SAME # OF _____________
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ELECTRONS
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EACH ENERGY LEVEL CAN HOLD A SPECIFIC # IF ELECTRONS:
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1ST ENERGY LEVEL HOLDS 2
2ND " " 8 3RD " " 18 |
