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15
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Elements in which period have valence electrons in the 7s, 5f, 6d and 7p orbitals.
Period 7
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thief
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25
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gift
Win 20 points!
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rocket
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banana
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15
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What is the state of sodium in 20*C?
solid
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15
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The first period conatains which elements?
hydrogen and helium
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15
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How many groups period in periodic table?
18 groups
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15
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What is the potassium's group name(special name).
alkali metal, lithium family
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boom
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gift
Win 25 points!
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shark
Other team loses 20 points!
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baam
Lose 10 points!
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15
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Elements of same group have similar properties?
They have similar physical and chemical properties.
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15
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How many trends in periodic table?
electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character
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15
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What are the rare earth element?
Lanthanides
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monster
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star
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fairy
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banana
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15
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What is period in periodic table?
horizontal rows
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15
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Elements in 3 period typically follow the so-called -
octet rule
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15
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Say one trend in periodic table.
electronegativity, ionization energy, electron affinity, atomic radius, melting point, and metallic character
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