TEST 1/18 CHEM!! Flashcards
atomic radii
distance between radius and its futhermost electron
atomic radii…
increases in size down a family (more energy levels) and smaller across a period (electrons are pulled closer)
Ionization
amount of energy required to remove an electron from the nucleus
Ionization…
decreases down a family (more energy levels- weaker) and increases across a period, there is a greater nuclear charge making it stronger
Electronegativity
the ability to draw electrons to yourself while chemically combined with another element
electronegativity….
decreases in a family (more energy levels) and increases in a period (metal to nonmetal)
sheilding
repelling valence electrons with core electrons (to have the greatest amount of sheilding, whichever element with the most valence electrons is actively being the most repelled)
to have the greatest ionization energy or electronegativity
have the least amount of distance to the nucleus as possible and therefore strongest nuclear charge (opposide for atomic radii)
least atomic radius can be determined by
whichever element has the strongest nuclear charge and most electrons (that weren’t pulled to the nucleus to make it bigger)- to have a larger atomic radii rhe element will have smaller amoung of e
cations
smaller than parent atom
anion
larger than parent atom
ionic size
same pattern as atomic radius, decreases from nuclear charge & energy levels (?) Pick up protons ang get smaller
reactive, malleable, good conductors, 1 valence electron
alkali metal
smaller atomic radii, lower electron affinities, form divalent cations, 2 valence electrons
alkaline earth metals
diatomic, salt-forming, 7 valence electrons
halogens