SL Periodicity Key Terms

Key Terms needed to know for standard level chemistry topic 3 Periodicity

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  • Created by: Holliee
  • Created on: 04-10-12 18:46
First Ionization Energy
The energy required to remove 1mol of electrons from 1mol of atoms in gaseous state to produce 1mol of ions
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First Ionization Energy Trend
ACROSS->INCREASES - increased nuclear charge DOWN-DECREASES - increased electron sheilding
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Electronegativity
The ability of the nucleus to attract a bonding pair of electrons
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Electronegativity Trend
ACROSS->INCREASE-increase nuclear charge DOWN->DECREASE- increase electron shielding
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Atomic Radii
Measured as the half length between two neighboring nuclei
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Atomic Radii Trend
ACROSS->DECREASE- increase nuclear charge DOWN->INCREASE-increase electron shielding
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Ionic Radii
Can be either bigger or smaller than parent atom Positive ions are smaller as they have lost electrons Negative ions are bigger as they have gained electrons
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Amphoteric Oxides
Can display both acidic and basic properties e.g Aluminium Oxide, Silicone Oxide
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Other cards in this set

Card 2

Front

ACROSS->INCREASES - increased nuclear charge DOWN-DECREASES - increased electron sheilding

Back

First Ionization Energy Trend

Card 3

Front

The ability of the nucleus to attract a bonding pair of electrons

Back

Preview of the back of card 3

Card 4

Front

ACROSS->INCREASE-increase nuclear charge DOWN->DECREASE- increase electron shielding

Back

Preview of the back of card 4

Card 5

Front

Measured as the half length between two neighboring nuclei

Back

Preview of the back of card 5
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