ch4 - ionic bond Flashcards
ionic compound
oppositely charged ions bond together
covalent bond
nonmetals share their valence electrons with other nonmetals
cations are smaller than
their parent atoms
anions are larger than
their parent atoms
oxidation state
the charge an atom would have if it had ionic bonds
oxidation states of main group metals
their highest oxidation state (group number)
oxidation states of transition metals
+2 and +3, except for Cu, Ag, Hg, and Au which are +1
oxidation states of metals
rarely have negative oxidation states
flourine oxidation state
-1
hydrogen oxidation state
+1
oxygen oxidation state
-2
halogen oxidation states
-1 unless bound to a more electronegative halogen
naming binary ionic compounds
name of cation (metal) and name of anion (nonmental with ending changed to -ide)
oxoanions ending in -ate
central atom is in its highest oxidation state
oxoanions ending in -ite
have one less oxygen than those ending in -ate, reduces oxidation state of central atom by 2
oxoanions of group 7a elements are exceptions because
they form four oxoanions
when group 7a elements are in their highest oxidation state
prefix - per, suffix - ate
when group 7a elements are in their lowest oxidation state
prefix - hypo, suffix - ite