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Electronegativity, elctron affinity and metallic character

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by

Harvey Buckle

on 5 March 2018

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Transcript of Electronegativity, elctron affinity and metallic character

Aim
To know the definitions of electronegativity and electron affinity
To know how these phenomena apply to the metallic character of elements
Aim
Write the equations for the reactions of period 3 oxides with water.
Electronegativity
This is the ability of a atom to attract a BONDING PAIR of electrons towards itself

Electronegativity INCREASES as you go across a period and DECREASES as you go down group
Electronegativity, elctron affinity and metallic character
5th March 2018
Why the change from metals to non-metals going left to right
Metals like to LOSE ELECTRONS to form POSITIVE IONS when they react and so they tend to have a ___ electronegativity
What about metals?
Trends again
Watch Mr Harvey
Electron affinity
The electron affinity of an atom or molecule is defined as the amount of energy released or spent when an electron is added to a neutral atom or molecule in the gaseous state to form a negative ion
Practical
Metallic character of period 3
Full transcript