PERIODIC TABLE REVIEW10/23/12 CAIAFA

SHIELDING DOWN A GROUPREADING DOWN A GROUP

NUCLEAR CHARGE (# OF PROTONS, ATOMIC #)INCREASES

NUMBER OF KERNEL SHELLS INCREASES, (SHIELDS VALENCE FROM

NUCLEAR CHARGE)DISTANCE FROM NUC TO VELENCE 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

SHIELDING L TO R IN A PERIODREADING 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

PROPERTY METALS NON METALSELECTRONEGATIVITYIONIZATION ENERGY

VERY LOW…VALENCE ELECTRONS HELD LOOSELYDO NOT GAIN ELECTRONSRELEASE ELECTRONS EASILY

HIGH…VALENCE ELECTRONS HELD TIGHTLYGAIN 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