CHEM1000 OCT26.docx - CHEM1000 Ch 8 Periodic Properties of The Element-Oct 26 >Periodic table electron configuration-Divided into blocks(s,p,d,f P-PINK

CHEM1000 OCT26.docx - CHEM1000 Ch 8 Periodic Properties of...

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CHEM1000- Ch 8 Periodic Properties of The Element -Oct 26 >Periodic table: electron configuration -Divided into blocks (s,p,d,f) P-PINK: 6 columns= three p orbitals with 2e- in each D-YELLOW: 10 columns = five d orbitals with 2e- in each F-GREEN Position: last orbital to be filled when assigning electron configuration Valence electrons- sharing or transfer of valence electrons from one atom to another Main group - VE contained in outmost energy level eg. {Ne}3s^23p^3 5 VE Transition Elements - count outermost d electrons among valence electrons eg. Ti {Ar}4s^23d^2
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Unformatted text preview: 4 VE Problem: condensed electron configuration for selenium atom (Se) , travel populating electrons as you go across the blocks Start at-[Ar] 4s 2 3d 10 4p 4 VE: 6 >Noble Gas Configurations-Unreactive, most stable tied to filling all valence electrons (8VE) -He=2 >Size of an Atom and Ions Br 2-measure distance between two bromine nuclei and divide by 2 to get number for atomic size -Size increase as go down periodic table (highest principal quantum number (n) of VE increases)-Size decrease as go across Lithium electron config: Beryllium: 1s 2 2s 2...
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