Chemistry111Chapter7

Added z increases attraction increases and radii

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Unformatted text preview: ases, attraction increases and radii decreases – Transition group is different (figure 7.9) Ionization Energy Ionization Ionization energy is the energy required to Ionization remove one electron from an atom in the gas phase phase Each atom has a series of ionization energies, Each because more than 1 e- can be removed because – Look at Magnesium example in book page 322 – Ionization energy generally increases across a period Ionization and down a group and Electron Affinity Electron Electron Affinity, EA – the energy of a process in Electron which an electron is acquired by an atom in the gas phase An element with a high ionization energy usually has a high electron affinity has More negative across a period Ion Sizes Ion Ions increase in size down a group The size of a cation is smaller than the atom The which it was derived which The size of the anion is larger than the atom The which it was derived which Isoelectronic ions – have the same number of e– O2-, F-, Na+, Mg2+ – Ionic radius gets smaller with higher number of Ionic protons protons Section 7.6 Section The noble gases have a high ionization energy The and low electron affinity. For the most part they are unreactive. unreactive If an anion has the noble gas configuration, an If additional electron would have to be added to the next higher quantum shell…unfavorable the Sufficient energy is available in ordinary Sufficient chemical reactions to remove electrons to form cations with a noble gas configuration. Loss of an additional e- would mean it would come from an inner shell…unfavorable inner...
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This note was uploaded on 09/27/2013 for the course CHEMISTRY 111 taught by Professor Olive during the Fall '13 term at North Alabama.

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