Bonding & Structure
The type of bond formed by the electrostatic attraction between a metal and a nonmetal.
What is an ionic bond?
The weakest type of IMF, present in all molecules, and caused by temporary dipoles.
What are London Dispersion Forces (LDF)?
The general term for a substance that can act as either an acid or a base, such as water.
What is amphoteric?
What are the bond angles in a molecule with a trigonal planar electron geometry?
What are 120 degrees?
How many atoms of oxygen atoms are 2 moles of O2 gas?
What is 4 x 6.02 E23 = 2.4 E24 atoms of O?
What is the molecular geometry of a molecule with 3 bonding domains and 1 pair of electrons?
What is Trigonal Pyramidal?
What is the strongest type of IMF present in a sample of ethanol?
What is hydrogen bonding?
What is the pressure of gases above a liquid in a closed container called?
What is vapor pressure?
What is the formal charge on the central nitrogen atom in the nitrite ion (NO2-)
What is 0?
A 10.0 g sample of an unkown compound comtains 4.0 g of C and 6.0 g of O. What is the empirical formula?
What is C2O3?
Draw the Lewis Structure for the CO3 - (carbonate ion) and list its bond order.
The bond order is 1.33 or 4/3.
The carbonate ion should be draw as resonance with the double bond rotating between the 3 different oxygens.
Bond order is 4 bonds/ 3electron areas = 1.33
Explain why HF (19.5 degrees C) has a much higher boiling point than HCl (-85 degress C).
What are the hydrogen bonding in HF vs the dipole:dipole interactions in HCl?
Why is the lattice energy of MgO greater than the lattice energy of NaCl?
Because Mg and O have charges of +2 and -2 while Na and Cl have charges of +1 and -1, the larger charges make a greater attraction between the ions.
Draw the Lewis structure and state the molecular geometry of XeF4.
Xe with four single bonds to each F and two lone pairs on the central atom.
The geometry is what is square planar?
Calculate the mass of 0.50 moles of Ca(NO3)2 (calcium nitrate).
What is 82.05 g?
Why are pure metals generally good conductors of electricity in both the solid and liquid states?
What is the the sea of mobile electrons?
Rank the following substances by increasing boiling point: Fe, CH4, water.
What is CH4 < water< Fe
Silicon dioxide is not ionic and not molecular. What type of solid is it?
What is a network covalent solid?
How many sigma and pi bond in O2?
1 pi bond and 1 sigma bond
What is the molarity of a solution made by dissolving .25 moles in 0.50 L?
What is .50 M?
Identify the hybridization of the central nitrogen atom in the molecule of ammonia gas (NH3).
What is sp3?
Which IMF is resonsible to methanol dissolving in water?
What is hydrogen bonding?
Why is the IMF called between an ion and water?
What is ion:dipole?
What are the bond angles in methane? (CH4)
What volume of 15.0 M HNO3 must be added to water to make a 1.0 0L and .750 M solution?
What is .0500 L or 50.0 ml?