Chemistry 1.3 Electron shells or energy levels

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  • Created by: Dan
  • Created on: 26-12-13 12:42
What is meant by atomic orbitals?
A region in an atom that can hold up to 2 electrons with opposite spins
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How are these atomic orbitals filled?
In order of increasing energy
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What is meant by electronic configuration?
The arrangement of electrons in an atom
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Are all orbitals filled in order?
No! 4s fills before 3d
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What are the 2 elements with an unexpected configuration?
Chromium and Copper. They end in 4s orbitals
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Describe how electronic shielding works.
Electrons from inner shells repel electrons from outer shells. Same signs repel
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What is meant by '1st Ionisation level'?
The amount of energy it takes to remove 1 mole of electrons from one mole of its gaseous atom
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What makes up electronic attraction?
Nuclear charge, electronic shielding and Atomic radius
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Other cards in this set

Card 2

Front

How are these atomic orbitals filled?

Back

In order of increasing energy

Card 3

Front

What is meant by electronic configuration?

Back

Preview of the front of card 3

Card 4

Front

Are all orbitals filled in order?

Back

Preview of the front of card 4

Card 5

Front

What are the 2 elements with an unexpected configuration?

Back

Preview of the front of card 5
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