Ions Flashcards
what are Ions?
they are charged particles that can be single atom ( Na+) or grouped atoms ( NO-3)
what is a stable electronic configuration ?
when atoms gain or lose electrons to form ions with a full outer shell
what are negative ions called
Anions
what are positive ions called
cations
when do anions form
when atoms gain electrons
when do cations form
when atoms lose electrons
which groups are likely to form ions
Group 1 & 2 and group 6 & 7
why do group 1 & 2 form ions
because they are metals so they lose electrons to form positive ions
why do group 6 & 7 form ions
because they are non - metals so they gain electrons to form negative ions
what is the overall charge of any ionic compound?
0
what happens if the overall charge is 0 ?
this means that negative charges in compound balance the positive charges