Transcript 854PTableTrends

PERIODIC TABLE REVIEW
10/23/12 CAIAFA
SHIELDING DOWN A GROUP
READING DOWN A GROUP
NUCLEAR CHARGE (# OF PROTONS,
ATOMIC #)
INCREASES
INCREASE EFFECTIVE NUCLEAR
CHARGE TO VALENCE ELECTRON(S)
NUMBER OF KERNEL SHELLS
INCREASES, (SHIELDS VALENCE FROM
NUCLEAR CHARGE)
DISTANCE FROM NUC TO VELENCE INCREASES
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 PERIOD
READING LEFT TO RIGHT ACROSS A PERIOD
NUCLEAR CHARGE (# OF PROTONS,
ATOMIC #)
INCREASES
INCREASE EFFECTIVE NUCLEAR
CHARGE TO VALENCE ELECTRON(S)
NUMBER OF KERNEL SHELLS
UNCHANGED, (SHIELDS VALENCE FROM
NUCLEAR CHARGE)
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 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