3.3 Ionic Bonding Flashcards
How do metal ions form?
metals lose their outer-shell electrons to get a full outer-shell
What charge are metal ions?
positive - full outer-shell
What is reduction?
gain in electrons
What is oxidation?
loss of electrons
Why is an ion more stable?
full outer-shell
How do non-metal ions form?
gain electrons to get a full outer-shell
What happens when an ionic compound forms?
metal loses its electrons and non metal gains them
What does an ionic compound form between?
metal and non-metal
What is the charge in an ionic compound?
neutral
What is the charge of elements in Group 1?
+1
What is the charge of elements in Group 2?
+2
What is the charge of elements in Group 3?
+3
What is the charge of elements in Group 4?
shares electrons!!
What is the charge of elements in Group 5?
-3
What is the charge of elements in Group 6?
-2
What is the charge of elements in Group 7?
-1
What is the charge of elements in Group 0?
nothing
What is the ionic structure?
arranged in giant lattice
alternating charge of ions
Define ionic bonding
electrostatic attraction between oppositely charged ions
Why is ionic bonding so strong?
giant lattice - lots of very strong bonds
Why do ionic compounds have high melting points?
- very strong
- giant lattice : lots of bonds
- lots of energy needed to break
What also makes some ionic compounds have high melting points?
if the ions have higher charges
- attraction is even stronger
- more energy needed
Why can’t ionic compounds conduct electricity when solid?
ions cannot move freely
in fixed position
cannot carry charge
Why can ionic compounds conduct electricity when liquid?
ions can move freely
not in fixed position
can carry charge
