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| strength of nucleus down group |
gets wearker becasue size of atom is getting largerm making electrons in levels farther away shielding attraction from nucleus |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| strength of nucleus across period |
increases, atomic number increasees |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| electronegativity down group |
decrease becaue valeence electrons are farther away fromnucleus |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| electronegativity across period |
increases because of increase in nuclear charge- pulls electrons toward nucleus |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| electronegativity |
ability to attrat electrons |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| larger than neutral atom due to more electrons so nucleus cant pull as well on each electron |
anion |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| anions |
gained electrons
has negative chrge |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| smaller than nuetral atom due to less electrons, so nucleus can pull better on each electrion |
cation |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| cations |
lost electrons
have positive charges |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| ionic radii down group |
increase becasue farther awway from nucleus higher charge |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| ionic radii across period |
decreased because electrons are pulled closer to nucleus |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| ionic radiii |
ionic radius size of ion |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| electron affinity down group |
becomes difficult / more endothermic |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| electron affiinity across period |
becomes easier/ exothermic |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| when hard to add electron EA= |
endothermic/positive |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| when easy to ad an electron EA= |
exothermic/negative |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| electron affinity |
energy change when electron is added |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| ionization energy down group |
decrease because outer valence electrons are farther away from nucleus, more easily removed
because out er electrons are shieled from positive nucleus and have a weak attraction to nuclues |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| ionization energy across a period |
energy increases because of increase in nuclear charge cuasiong electrons to be pulled toward nucleus.
very hard to pull awa because of stron attraction |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| ion |
atom with a charge due to gain or loss of an electron |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| ionization energy |
amount of energy used to remove an electron |
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mstarten2 Thu, 12 Nov 2009 02:44:17 GMT |
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| atomic radius down column |
gets larger
because outer electrons filll higher sublevel in a higher eneergy level farther away from nuclues |
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mstarten2 Wed, 11 Nov 2009 02:28:24 GMT |
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| atomic radius across period |
gets smaller because increased electron pull towards nucleus results in a lower atomic radius |
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mstarten2 Wed, 11 Nov 2009 02:28:24 GMT |
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| atomic radius |
size of radius |
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mstarten2 Wed, 11 Nov 2009 02:28:24 GMT |
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