14-The atom is chemically ....................if some of the dots are unpaired in Lewis structure so it can form .....................with another atom
unstable -bond
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15
3-the electrons in the outer energy level is called ............
Valence electrons
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15-The number of unpaired dots in Lewis structure = ..................... a-chemical reaction with another atom b-number of bonds an atom can form.
both
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4-The valence electrons of the atom participate in chemical bonding.
True
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5-The Periodic table includes 7 periods and 18 groups
true
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1-The vertical column on the periodic table………………………………………
Group
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2-------------the horizontal rows in the periodic table
Period
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trap
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shark
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fairy
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banana
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17-This is the correct dot diagram for sodium (Cl) which found in group 7
True
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banana
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seesaw
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gift
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thief
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13-The atom is chemically ..................if all dots are paired in Lewis structure
stable
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monster
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seesaw
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banana
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19-Oxygen atom has 4 valance electrons
False
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magnet
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shark
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lifesaver
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11-Is a simple way to show how the valence electrons are arranged in the outer shell.
electron dot diagram ( Lewis structure )
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10-The no. of valence electrons for group 18 is........... except helium has ...............
