What electrons are shown in a Lewis Dot Structure?
The Valence Electrons
100
What is a common shape formed by a molecule with four bonds?
A tetrahedron
100
What are valence electrons?
The outermost electrons in an atom
200
What is a cation?
A positive ion
200
What holds covalent bonds together?
Shared pairs of electrons
200
What atom is the most common central atom?
Carbon
200
What is the model for predicting molecular shape?
VSEPR (Valence Shell Electron Pair Repulsion)
200
What is a coordinate covalent bond?
A bond where one atom shares 2 electrons and other doesn't share any
300
What is an anion?
A negative ion
300
Do covalent compounds have low or high melting and boiling points?
Low
300
How is a double bond represented in a Lewis Dot Structure?
By two lines
300
How do unshared pairs change molecular shape?
They can cause the molecule to bend
300
Why are ionic bonds strong?
The positive and negative charges hold the atoms together
400
What is the minimum amount of electronegativity difference between atoms to form an ionic bond?
2.1
400
What is a polar covalent bond?
A covalent bond where the electrons are unequally shared because which results in a positive partial charge around one part and a negative partial charge around another part
400
What is the Lewis Dot Structure for HClO?
See board
400
What shape is carbon tetrachloride?
Tetrahedral
400
What is the electron geometery of Sulfur Tetrafluoride?
A Trigonal Bipyramid
500
What is the name of the ionic compound CoO?
Cobalt (II) Oxide
500
What is the chemical name of NI?
Nitrogen Monoiodide
500
What type of bonds are formed in HCN?
A single and a triple bond
500
What shape does a water molecule have?
A bent shape
500
What are the prefixes used to denote number in covalent compounds for 1-10?