Trends in the Periodic Table Flashcards
attractive forces b/w oppositely charged particles is increased by number and decreased by distance
Coulomb’s Law
shielding effect
more distance = protons have less pull
half the distance b/w nuclei of 2 like atoms
atomic radius
atomic radius trends
decreases across a period
increases down a group
energy required to remove an electron from an atom
ionization energy
ionization energy trends
INCREASES across a period
DECREASED down a group
energy charge associated with the addition of an electron
electron affinity
electron affinity trends
INCREASES ACROSS A PERIOD
DECREASES DOWN A GROUP
a measure of the ability of an atom in a chemical compound to attract electrons
electronegativity
electronegativity trends
INCREASES ACROSS A PERIOD
DECREASES down a group
positively charged ions
formed when an metal atom loses 1+ electrons
smaller
cations
negatively charged ion
formed when a nonmetal atom gains 1+ electrons
lager
anions