Atomic structure

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  • Created by: XxzoexX
  • Created on: 27-04-14 21:48
How do you find out the number of protons?
The same number as atomic number
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How do you find out the number of electrons?
The same number as atomic number
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How do you find out the number of electrons?
Mass number subtract atomic number
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What do all atoms have equal numbers of?
Protons and electrons
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How many electrons can the 1st shell hold?
2
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How many electrons can the 2nd and 3rd shell hold?
8
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How many electrons can the 4th shell hold?
18
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What does the period number tell you?
How many shells it has
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What does the group number tell you?
The number of electrons in the outer shell
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When elements react together what does the atoms try and become?
More stable by having a full outer electron shell
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What does it mean if a metal is very reactive?
The electron structure only needed to lose one electron to be stable-to be left with a full outer shell
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What does it mean if a metal is unreactive?
The electrons structure already has a full outer shell so doesn't need to gain or lose any electrons
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Metal atoms all lose electrons to form...
Positive ions
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None metal atoms gain electrons to make...
Negative ions
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Other cards in this set

Card 2

Front

How do you find out the number of electrons?

Back

The same number as atomic number

Card 3

Front

How do you find out the number of electrons?

Back

Preview of the front of card 3

Card 4

Front

What do all atoms have equal numbers of?

Back

Preview of the front of card 4

Card 5

Front

How many electrons can the 1st shell hold?

Back

Preview of the front of card 5
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