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What is the definition of Ionisation Energy?
Energy required to remove 1 mole of electrons from one mole of gaseous atoms
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Name 3 reasons why ionisation energy increases across a period.
Nuclear charge increases, atomic radius decreases and repulsion of electrons in a pair while shielding remains the same.
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Why does ionisation energy decrease down a group?
More inner filled energy levels so shielding increases and atomic radius decreases
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Why does electronegativity increase across period 3?
Proton number increases so their is a greater attraction of electrons in a covalent bond
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How is atomic radii measured?
Half the distance between between centres of 2 of the same atoms in a covalent bond
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Other cards in this set

Card 2

Front

Name 3 reasons why ionisation energy increases across a period.

Back

Nuclear charge increases, atomic radius decreases and repulsion of electrons in a pair while shielding remains the same.

Card 3

Front

Why does ionisation energy decrease down a group?

Back

Preview of the front of card 3

Card 4

Front

Why does electronegativity increase across period 3?

Back

Preview of the front of card 4

Card 5

Front

How is atomic radii measured?

Back

Preview of the front of card 5

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