Electronic Structure

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  • Created by: zoolouise
  • Created on: 28-03-16 13:31
What do electrons within atoms occupy?
Fixed energy levels, or shells. They're numbered 1, 2, 3, 4, etc and the numbers are known as principle quantum numbers, or n.
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What does the lower the value of n mean?
The lower the value of n, the closer the shell is to the nucleus and therefore the lower the energy level.
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What are atomic orbitals?
Regions of space around the nucleus where there's a high probability you'll find an electron with a given energy.
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What's the definition of an atomic orbital?
An atomic orbital is a region in an atom that can hold up to two electrons with opposite spins.
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What are subshells?
Orbitals of the same type being grouped together.
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How many electrons can each orbital hold?
Each orbital can hold two electrons with opposing spins, reducing the effect of repulsion.
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What is an S orbital?
An S orbital is spherical and often drawn as a circle.
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An S orbital is spherical and often drawn as a circle.
P orbitals come in three different types, they are dumbell shaped probes. They're known as px, py and pz. They're at right angles to eachother.
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How many electrons can each different subshell hold?
S subshells can hold 2 electrons, P subshells can hold 6 electrons, D subshells can hold 10 electrons and F subshells can hold 14 electrons.
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What is Aufau principle?
Electrons fill atomic orbitals in order of increasing energy.
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What is the Pauli exclusion principle?
A maximum of two electrons can occupy each orbital with opposing spins.
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What is Hund's rule?
The orbitals will first fill with one electron each with parallel spins, before a second electron is added with the paired spin.
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What is the variation when filling subshells?
An order is followed up until the 3p subshell, the 4s subshell is filled before the 3d subshell.
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Other cards in this set

Card 2

Front

What does the lower the value of n mean?

Back

The lower the value of n, the closer the shell is to the nucleus and therefore the lower the energy level.

Card 3

Front

What are atomic orbitals?

Back

Preview of the front of card 3

Card 4

Front

What's the definition of an atomic orbital?

Back

Preview of the front of card 4

Card 5

Front

What are subshells?

Back

Preview of the front of card 5
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