LM 1f ionic bonding Flashcards
how are ions formed?
electron loss or gain to have a full outer shell
why are some atoms more likely to form ions?
because they are the ones that have less electrons to lose or gain, which takes up less energy
why are some atoms less likely to form ions?
because they would need more energy to lose or gain a lot of electrons
if atoms gain an electron what would its charge be?
negative charge
if atoms lose an electron what would its charge be?
positive charge
what is the transfer of electrons?
when an atom that needs to gain an electron gets it from an atom that needs to lose an electron
what happens to the oppositely charged ions?
they are attracted to each other by electrostatic forces, this creates and ionic compound
- this is an ionic bond
what is the strength of ionic forces between an ionic compound?
really strong
how do you draw the ions?
dot and cross diagrams
- dots for one and crosses for the other
- have square brackets with the charge on the side
do ionic compounds conduct electricity?
they do not when solid but do conduct in a molten and aqueous solution
what do you call the ionic structure?
regular lattice structure
why do ions form a lattice structure?
the positive and negative ions alternate so each ion is attracted to all those around
what are the melting and boiling points of ionic compounds like?
high
why do ionic compounds have high melting and boiling points?
loads of strong ionic bonds which would require lots of energy
why do ionic compounds become conductors when molten or dissolved in water?
the ions are free to move about
- which allows them to conduct electricity
