Bonds
Is hydrogen a metal or nonmetal?
Nonmetal
Do you draw arrows or lines for ionic compounds? What does this symbolize?
Arrows, transfer of an electron
What type of chemical bonds does the VSEPR theory apply to?
Covalent
When do you use covalent naming?
When you have a covalent compound (nonmetal and nonmetal)
What type of bond is the following element: SrF2
Ionic
Do you draw arrows or lines for covalent compounds? What does this symbolize?
Covalent, each line represents TWO shared e-s (one from each atom)
If a covalent compound has three atoms bonded to the center and no lone pairs, what type of VSEPR molecular geometry would it have?
Trigonal planar
When do you use simple ionic naming?
When you have an ionic compound whose metal is from Group 1 or Group 2
Why do elements bond?
To fill their valence shell, aka the OCTET RULE
Draw the Lewis structure for CaF2
Ionic, Ca transfers one e- to each F
[Ca]2+[:F:]-[:F:]-
What is the VSEPR shape for SiBr4?
Tetrahedral
Which type of naming does not need prefixes?
Ionic
What happens to the electrons in a covalent bond?
They are shared by the atoms in the compound
Draw the Lewis structure for CBr4
What is the VSEPR shape of NH3?
Pyramidal
What is the name of SCl6?
Sulfur hexachloride
According to the “sea of electrons” theory, how do electrons behave in metallic bonds? (Bonus: 100 points; what are three physical properties that are possible because of the “sea of electrons theory”?
Electrons flow freely around the nuclei of atoms, not sticking to one specific valence.
Bonus: malleability, ductility, conductivity
Draw the Lewis Structure for CS2
Covalent, Carbon in center double bonded to 2 Sulfur atoms, both S have 2 lone pairs
::S=C=S::
What does the VSEPR theory predict?
The shape of a covalent compound (the different bonds and lone pairs want to be as far apart from each other)
What is the name of K2S?
Potassium sulfide