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Gr11chem study IE,EA,EN

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Ionization Energy   Energy it takes to remove an electron from an atom. Across L-R increasing because more protons means more pulling is needed as the shells get full. Down U-D decreasing because there are more shells that get in the way of the pull, so it is weaker.  
Electron Affinity   the change in energy when gaining an electron in gases. Across L-R energy when forced to gain an electron increases because the shells get full. Down U-D decreasing because the shells are in the way and decrease the pull of the atom.  
Electronegativity   An atom's ability to attract electrons to itself. the stronger subtracts the weaker one to get electronegativity. Little difference means same 2 gases(covalent). Big difference means 2 different M+NM (ionic). Higher than 1.7 is considered ionic  
Atomic Size   radius size of elements. Across L-R decreasing because more protons. Down U-D increasing because of more shells.  
Octet Rule   having the same electron configuration as a noble gas.  
Diatomic Elements   when 2 of the same element bonds together  
Ionic Compound   strong ionic bonds hold ions in lattice formation. extremely high melting point. solids  
Covalent Compound   polar molecules, strong intermolecular bonds, higher melting point than non-polar, water. non-polar molecules, weak intermolecular bonds, lower melting point than polar, gas  
Stock System   Iron(2) Oxide or Iron(3) oxide  
Alternative System   Copper - (1)Cuprous, (2)Cupric Mercury - (1)Mercurous, (2)Mercuric Lead - (1)Plumbous, (2)Plumbic the longer ending first. oUS hICcup  


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