Structure and Bonding 1.0 / 5 based on 1 rating ? ChemistryStructure and bondingGCSEEdexcel Created by: Isha112Created on: 01-03-15 16:31 Why do Noble gases exist as single atoms? Noble gases hae full outershells of eectrons so they do not form bonds with other atoms. They exist as gases in room temperature. 1 of 5 Why do nonmetals need to gain electrons? To obtain full outer shells and become stable. They do this by sharing electrons eg covalent bonding 2 of 5 What is holding the atoms together? Attraction between protons and the shared electrions hold everything together. 3 of 5 Why are simple molecules usually gases at room temperature? Only weak forces are holding the molecules together (intermolecular forces). However, heavier molecules are liquids and solids at room temp. 4 of 5 Give the example of iodine Grey purple solid at room temp. When heated, only the weak intermolecular forces have to be broken to melt or boil the solid. 5 of 5
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