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Summary Properties of Period 3 Elements

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These documents are my hand-written summary notes for AQA A Level Chemistry = Properties of Period 3 Elements & Their Oxides. I have tried my best to condense my notes; so NO TIME WASTED

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  • May 28, 2023
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3.2.4.1 - General Knowledge Of Period 3 Elements

Pehod3 elements Physical Properties
pehodn the 3rdrowonthepenodic table

this consists ofthe elements;

* NC
sodium: D
&Phosphows:

↑ Magnesium Mg
=
* Sultr-S
& ALUMINIM:Al chloune:
* CL
a silicon =
5; *Argon Ar
=




ATOMIC RACUS
As you go across Penod 3, the atomic rads decreases

they are not
gaching new electral shells

& Only filling 39ad3p orbitalS

their nuclearcharge increases

* stronger forces attractic
of Between the positive nucleus and US

elections




Melting 11 Boiling Point
As you go across Pehod 3, the bolling increases
pot until silicon


NG, Mg + Al have metallic bonding

* strong electrostatic attractia between the positive
forces of

electrons
Ions and the delocalised


* energy
lots of requiredto breakthose bonds


Si, p.5, C1 +Ar have rander walls forces

* intermolecular force
weakest

little energy neededto overcome these tones
*

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