PERIODIC TABLE REVIEW - PowerPoint PPT Presentation

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PERIODIC TABLE REVIEW

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periodic table review 10/23/12 caiafa shielding down a group reading down a group nuclear charge (# of protons, atomic #) increases number of kernel shells increases ... – PowerPoint PPT presentation

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Title: PERIODIC TABLE REVIEW


1
PERIODIC TABLE REVIEW 10/23/12 CAIAFA
2
SHIELDING DOWN A GROUP
READING DOWN A GROUP
NUMBER OF KERNEL SHELLS INCREASES, (SHIELDS
VALENCE FROM NUCLEAR CHARGE) DISTANCE FROM NUC TO
VELENCE INCREASES
NUCLEAR CHARGE ( OF PROTONS, ATOMIC ) INCREASES
INCREASE EFFECTIVE NUCLEAR CHARGE TO VALENCE
ELECTRON(S)
DECREASES EFFECTIVE NUCLEAR CHARGE TO VALENCE
ELECTRON(S)
DECREASES EFFECTIVE NUCLEAR CHARGE TO VALENCE
ELECTRON(S)
DECREASES ELECTRONEGATIVITY AND IONIZATION ENERGY
INCREASES ATOMIC RADIUS
3
SHIELDING L TO R IN A PERIOD
READING LEFT TO RIGHT ACROSS A PERIOD
NUCLEAR CHARGE ( OF PROTONS, ATOMIC ) INCREASES
NUMBER OF KERNEL SHELLS UNCHANGED, (SHIELDS
VALENCE FROM NUCLEAR CHARGE)
INCREASE EFFECTIVE NUCLEAR CHARGE TO VALENCE
ELECTRON(S)
NO EFFECT ON EFFECTIVE NUCLEAR CHARGE TO VALENCE
ELECTRON(S)
INCREASES EFFECTIVE NUCLEAR CHARGE TO VALENCE
ELECTRON(S)
INCREASES ELECTRONEGATIVITY AND IONIZATION ENERGY
DECREASES ATOMIC RADIUS
4
PROPERTY METALS NON METALS
ELECTRONEGATIVITY IONIZATION ENERGY VERY LOWVALENCE ELECTRONS HELD LOOSELY DO NOT GAIN ELECTRONS RELEASE ELECTRONS EASILY HIGHVALENCE ELECTRONS HELD TIGHTLY GAIN ELECTRONS DO NOT RELEASE ELECTRONS
IONIC RADIUS IONS SMALLER THAT THE ATOM, ELECTRONS ARE LOST, CLOUD CONTRACTS -IONS LARGER THAN ATOM, ELECTRONS ARE GAINED, CLOUD EXPANDS
CONDUCTIVITY GOOD CONDUCTORS OF HEAT AND ELECTRICITY VALENCE ELECTRONS MOBILE, CAN CARRY CURRENT..SEA OF ELECTRONS POOR CONDUCTORS OF HEAT AND ELECTRICITY VALENCE ELECTRONS HELD TIGHTLY, IMMOBILE.
PHYSICAL PROPERTIES MALLEABLE, DUCTABLE, LUSTROUS BRITTLE, UGLY
METALLIC CHARACTER INCREASES TO LOWER LEFT DECREASES TO UPPER RIGHT
REACTIVITY INCREASES DOWN A GROUP DECREASES DOWN A GROUP
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