3.3 Ionic bonding Flashcards
When are ionic compounds usually formed?
When metals react with non metals
What ions do metals form?
positive ions
What ions do non metals form?
negative ions
How are ions formed held next to each other?
by strong forces of attraction between oppositely charged ions
What is ionic bonding?
An electrostatic force of direction which acts in all directions
What do ionic bonds result in?
an arrangement of ions called giant structure or giant lattice
How many electrons in the outer shell of a group 7 atom?
7
How many electrons in the outer most shell of a group 1 atom?
1
What does the group number give?
The number of electrons in the outer most shell
How does group number relate to charges on ions formed from atoms?
Atoms reacting need to gain or lose 2 electrons to gain stable electronic structure of a noble gas
Group 1 atoms form?
1+ ions
Group 2 atoms form?
2+ ions
Group 3 atoms form?
3+ ions , when they form ions as oppose to sharing electrons