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The second energy level (L) is saturated with âĶâĶâĶâĶ. , while the fourth one (N) is saturated with âĶâĶâĶâĶâĶ. electron
2-36
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15
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The number of positive proton in the nucleus .
atomic number
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The amount of energy lost or gained when an electron transfer from one energy level to another .
quantum
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15
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Negatively charged particles of negligible mass that revolve around the nucleus .
electrons
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15
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The symbol of sodium atom is âĶâĶâĶâĶâĶâĶ., while that of sulphur atom is âĶâĶâĶâĶâĶâĶâĶ.
Na - S
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15
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The number of negative electron that rotate around the nucleus
atomic n
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15
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The mass number is the sum of âĶâĶâĶâĶâĶâĶ number and âĶâĶâĶâĶ., which exist in the nucleus .
protons neutrons
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×
boom
Lose 50 points!
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rocket
Go to first place!
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shark
Other team loses 20 points!
Okay!
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baam
Lose 10 points!
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15
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- The fundamental building unit of matter that can take part in the chemical reaction .
atom
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×
lifesaver
Give 25 points!
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rocket
Go to first place!
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rocket
Go to first place!
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thief
Give points!
5
10
15
20
25
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- Imaginary places around the nucleus in which the electron move according their energy .
energy levels
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15
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Electron are particles with âĶâĶâĶâĶ.. charges , while proton are particles with âĶâĶâĶâĶâĶ.. charges
positive - negative
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trap
No points!
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seesaw
Swap points!
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shark
Other team loses 20 points!
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baam
Lose 25 points!
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15
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-Active element should have âĶâĶâĶâĶ.. than 8 electron in outermost energy level .
less
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15
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The sum of the number of proton and neutrons in the nucleus
mass number
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heart
Other team wins 20 points!
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star
Double points!
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rocket
Go to first place!
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lifesaver
Give 10 points!
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