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 K 2 O? Potassium oxide
What is the name of SiO 2 ? Silicon dioxide
What is the name of Cu 2 O? Copper (I) oxide
What is the formula for sodium sulfate? Na 2 SO 4
What is the formula (with charge) for a phosphate ion? PO 4 3-
In Beryllium Chloride (BeCl 2 ), 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 CO 2 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 NH 4 OH ionic or covalent? Ionic
What is the name of NH 4 OH? Ammonium hydroxide
What is the formula for nickel (II) carbonate? NiCO 3
How many domains does the carbon in CH 4 have? 4
What is the name of the shape CH 4 has? Tetrahedral
How many domains does the carbon in NH 3 have? 4
What is the name of the shape NH 3 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