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 LOW…VALENCE ELECTRONS HELD LOOSELY
DO NOT GAIN ELECTRONS
RELEASE ELECTRONS EASILY
HIGH…VALENCE 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