Chemistry bonds Flashcards
2 ways atoms can achieve stability
sharing electrons (covalent) or the transfer of electrons (ionic)
properties of ionic compounds and why
form crystalline solids
high melting and boiling points
hard a brittle
conduct electricity when dissolved (oqueous) or in molten state
what are ionic compounds formed with
metal and a nonmetal
salts
ionic compounds that do not with H nor end with OH
which type of element usually forms cations (loses electrons)
metals and transitional metals
tin and lead are transition metals and therefore have access to the d sublevel so they can form more then on cation there is no way to determine how many electrons they will lose how will this info be given
roman numerals
is the roman numeral used for anions
no
what does the roman numeral give
the charge of the cation
what are covalent bonds formed from
2 non metals
covalent bonds
no ions are formed
can exsist as soft solids, liquids, or gases
not soluable in water
when is non polar molecule formed
when electrons share equally
when is a polar molecule formed
when electrons spend more time around one atom than the other, so electrons are shared unequally
metallic bonds
formed when two metals are around each other too much so their electrons become detached
delocalized electrons
electrons that are not apart of a specific atom
sea of electrons
group of delocalized electrons that have combined and attracted to the positive nuclei
