QUIZ 4
The correct forum for ammonium sulfate is
(NH4)2SO4
the rigid 3-d arrangement assumed by the ions of ionic compounds is called a
crystal lattice
Which interparticle forces would you expect to find in a sample of the element lithium?
metallic
A covalent bond results when
two atoms share a pair of electrons
Which of the following molecules would be classified as polar covalent? A. NaCl B. CH3Cl C. KCl D. CaCl2
CH3Cl
Which of the following would be a polar molecule?
HCl
The correct name for BaCO3 is
barium carbonate
The molecular structure of water should be
bent because of the unshared electrons on the molecule.
A polar molecule must have
both polar bonds and an unsymmetrical arrangement
What is the formula mass of the compound formed between Al3+ and Cl-?
133.5 u
NH3 (ammonia) exhibits what type of structure?
A pyramid with a triangular base.
Hydrogen bonds form between the molecules of the hypothetical compound ABCH and do not form between DEFH molecules
ABCH represents a compound that contains O, N, or F directly bonded to H
The correct formula for a compound formed from the elements Al3+ and PO43- would be
AlPO4
Which pair of elements will be further apart in electronegativity? A. Cl and F B. Li and Cl C. Mn and Se D. U and Cs
Li and Cl
Which of the following would cause a calcium atom to achieve a noble gas configuration?
Lose 2 electrons
The ionic compound that forms between Mg and O has the formula
MgO
Which of the following covalent molecules contains polar bonds? A. O --- C B. H - H C. H - F D. more than one response is correct
More than one response is correct
Which of the following has the highest electronegativity? A. O B. N C. Si D. P
O
Which of the following has a noble gas electronic configuration? A. Cl B. O- C. Br- D. Cl+
Br-
The correct formula of an ionic compound containing Fe2+ and ClO4- is
Fe(ClO4-)
If the electronegativity difference between A and B is 0.8, what type of bond is formed between the two elements?
Polar Covalent
The correct name for KHPO4 is
Potassium Hydrogen phosphate
The correct name for the covalent compound N2O4 is
dinitrogen tetroxide
