Unit Test Review Flashcards
Metals x non metals
Solids and ionic
What metal is not a solid
Mercury
What state are covalent bonds in
All
Ionic bonds
Metals and non metals
Covalent bonds
Metals x non metals
Bohr models
Show all of the shells
Lewis dot diagrams
Show only valence electrons
Octet rule
Make sure valence electrons are full
Octet rule
Atoms gain/ loose to fill valence shells
What is an exception to the octet rule
First energy shell has only two electron
Electron dot diagrams
Determine valence electrons
Work clockwise
Place 1 on each side and pair when there are more than 4 electrons
What happens to unpaired electrons
Are taken into ionic compounds or shared in molecular bonds
Ionic bonds
Metals lose electrons to become ions and non metals gain
Covalent bonds
Share electrons to complete valence electrons
Non metals
What diagram should be drawn when drawing ionic and covalent bonds
LDD
The process for drawing covalent bonds
Count total of valence
Atom with highest bonding e is central atom
Distriubte central then others with e making sure all have an octet
Lone pair
Are two electrons drawn beside eachother
Bonding electrons
Are electrons drawn without a pair
Structural formula
Use lines to represent bonds
Acid
Has an H in it
What are two exceptions to the octet rule
Boron has three electrons and fills at 6
Berylium has two electrons and fills at 4
Resonance structures
Is that there is more than one lewis dot diagram for a compound
Coordinate covalent bonds
When an atom gives up both electrons to form a bond
Metallic bonding
When all the metals share all the e
Make metals good conductors