forming ions Flashcards
1
Q
when are atoms stable?
A
when they have full outer shells
2
Q
why do atoms bond?
A
so they can gain/lose electrons to become stable
3
Q
if a metal and non-metal bond from where to where are the electrons transferred?
A
from the metal to the non-metal
4
Q
how do ions form; what is positive and what is negative?
A
if electrons are transferred then they gain a positive or negative charge
metal ions are positive (lost electrons), non-metal ions are negative (gained electrons)
5
Q
what is bonding between metals and non-metals called?
A
ionic bonding
6
Q
how do you work out the charge on a metal ion?
A
from its group number ie 1=+1, 2=+2, 3=+3, 4=+/-4, 5=, 6=-2, 7=-1