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Chem unit 3

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charlotteamannt's version from 2018-12-10 02:12

Section

Question Answer
Amalgams Allow of mercury with another metal (when mercury dissolves other metal)
ductilecapable of being drawn into wires)
malleablehammered into thin sheets
lustreshiny
valence electronsouter-shell electrons
main-group elementsgroup 1-2 and 13-18
periodicityrepeating pattern of physical and chemical properties shown by the different periods
atomc radiusdistance from nucleus to outermost electron, since position of outermost electron can never be known precisely: half the distance between the nuclei of two bonded atoms of the same element
electron shieldingoccurs when outer e- are shielded from attraction of nucleus by inner electrons (known as shielding electrons)
isoelectronicspecies with same # of e-. Diff # of protons, as they are different elements, but same number of electrons
ionization energy(IE) min energy require to remove an e- froma neutral gaseous atom in its ground state
electron affinityenergy released when one mole of electrons are added to one mole of gaseous atoms to form one mole of gaseous 1− ions.
electronegativityrelative measure of attraction that an atom has for a shared pair of electrons when it is covalently bonded to another atom
amphotericcan react both as an acid and a base
amphiproticeither proton donor or acceptor
oxidizing abilityability to gain an electron
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