Unit 4 Review PowerPoint - Dr. Vernon-

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How many valence electrons
does magnesium have?
2
How many valence electrons
does nitrogen have?
5
What is the oxidation number
of Oxygen?
-2
Which is the only noble gas
without 8 valence electrons?
He
How many electrons would
Fluorine like to lose or gain to
become fluoride?
Gain 1
What is the charge of a Fe (II)
ion?
+2
What is the name of K2O?
Potassium
oxide
What is the name of SiO2?
Silicon dioxide
What is the name of Cu2O?
Copper (I)
oxide
What is the formula for
sodium sulfate?
Na2SO4
What is the formula (with
charge) for a phosphate ion?
PO4
3-
In Beryllium Chloride (BeCl2),
which element is losing
electrons? How many?
Be loses 2
What is happening with the
electrons in a single covalent
bond?
2 electrons are shared
between atoms
What is the EN difference in a
Carbon-Oxygen bond? Is that
polar or non?
0.9, polar
Why is CO2 a non-polar
MOLECULE?
Symmetrical;
dipoles cancel
What symbol do we use for a
dipole?
+
What are the electrons doing
in a POLAR covalent bond?
Being shared
UNEQUALLY
Is TiO ionic or covalent?
Ionic
Is NO ionic or covalent?
Covalent
Is NH4OH ionic or covalent?
Ionic
What is the name of NH4OH?
Ammonium
hydroxide
What is the formula for nickel
(II) carbonate?
NiCO3
How many domains does the
carbon in CH4 have?
4
What is the name of the
shape CH4 has?
Tetrahedral
How many domains does the
carbon in NH3 have?
4
What is the name of the
shape NH3 has?
Trigonal
pyramidal
Which element only needs 6
electrons (instead of an octet)?
Boron
Why is a water molecule bent
instead of linear?
Lone pairs
Which is the strongest
intermolecular force?
Molecule-ion
interaction
Which intermolecular force is
responsible for water’s high
boiling point?
Hydrogen
bonding
Hydrogen bonding is an extra
strong example of what other
intermolecular force?
Dipole-dipole
interaction
Which intermolecular force is
present with nonpolar compounds?
Dispersion
forces
One of which 3 elements
needs to be attached to
hydrogen for hydrogen
bonding to occur?
N, O, or F
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