ionic and metallic bonding
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9 Terms
what is metallic bonding
the electrostatic force of attraction beween the nuclei of positive ions and the delocalised electrons
what are delocalised electrons
electrons that are not associated with any single atom or any single covalent bond
what is ionic bonding
strong electrostatic attraction bewteen oppositely cahrged ions formed by electron transfer
what two factors affect the strength of ionic bonding
ionic charge —> higher charges means stronger electrostatic forces
ionic radius —> smaller ions, centre of charge closer, stronger attraction
positive ions are _____ than their atoms
smaller
negative ions are _____ than their atoms
larger
what are isoelectronic ions
ions with the same number of electorns
ionic radius ____ down a group
increases
each ion has one more shell of electrons than the one above it
outer electorns are further form the nucleus and more sheilded