Forces between Particles Flashcards
Which of the following would cause a calcium atom (Ca) to achieve a noble-gas configuration?
Select one:
a. lone one electron
b. lose two electrons
c. gaine one electron
d. gain two electrons
b. lose two electrons
The rigid three-dimensional arrangement assumed by the ions of ionic compounds is called
Select one:
a. a molecule.
b. a binary compound.
c. a lattice site.
d. a crystal lattice.
d. a crystal lattice.
A covalent bond results when
Select one:
a. one atom gives up an electron to another atom.
b. one atom gives up two electrons to another atom.
c. two atoms share a pair of electrons.
d. two atoms share a single electron.
c. two atoms share a pair of electrons.
In describing the strength of interparticle forces we discover that the weakest forces of bonds are
Select one:
a. covalent.
b. metallic.
c. dipolar.
d. dispersion.
d. dispersion.
Which types of interparticle forces lead to compounds with the lowest melting points?
Select one:
a. covalent
b. dispersion forces
c. ionic
d. dipolar forces
b. dispersion forces
Which of the following has a noble gas electronic configuration?
Select one:
a. Cl
b. O-
c. Br_
d. Cl+
c. Br_
When magnesium forms an ion, it would be represented as _______.
Select one:
a. Mg-
b. Mg2
c. Mg+
d. Mg2+
d. Mg2+
The correct name for CeS is ______.
Select one:
a. cesium sulfate
b. cesium sulfide
c. cerium sulfate
d. cerium sulfide
d. cerium sulfide
When an ionic compound forms between sodium (Na) and bromine (Br) atoms, it is true that
Select one:
a. a bromine atom donates an electron to a sodium atom.
b. both the bromine atoms and sodium atoms donate electrons to each other.
c. a sodium atom donates an electron to a bromine atom.
d. neither bromine nor sodium atoms donate electrons to each other.
c. a sodium atom donates an electron to a bromine atom.
Which of the following has the highest electronegativity?
Select one:
a. O
b. N
c. Si
d. P
a. O
Which of the following would be a polar molecule?
Select one:
a. O2
b. HCl
c. CH4
d. F2
b. HCl
The shape of a BF3 molecule is
Select one:
a. angular.
b. trigonal planar.
c. trigonal pyramid.
d. tetrahedral.
b. trigonal planar.
Which of the following is considered to have an ionic bond?
Select one:
a. NO
b. AIN
c. ClF
d. KCl
d. KCl
Which pair of elements will be further apart in electronegativity?
Select one:
a. Cl and F
b. Li and Cl
c. Mn and Se
d. U and Cs
b. Li and Cl
Which of the following distinguishing electron configuration is characteristic of noble gas?
Select one:
a. f14
b. d10
c. P6
d. s2
c. P6
Which of the following has a noble-gas electronic configuration?
Select one:
a. Cl
b. O-
c. Br-
d. Cl+
c. Br-
Arrange the following bonds in order of increasing bond polarity.
Select one:
a. C–O < P–O < Cl–O
b. Cl–O < C–O < P–O
c. P-O < Cl-O < C-O
d. C–O < Cl–O < P–O
b. Cl–O < C–O < P–O
Which of the following molecules would be classified as polar covalent?
Select one:
a. NaCl
b. CH3Cl
c. KCl
d. CaCl2
b. CH3Cl
The ionic compound that forms between magnesium (Mg) and oxygen (O) has the formula
Select one:
a. Mg2O
b. MgO
c. MgO2
d. MG2O3
b. MgO
How many moles of K+ and P3- ions are present in 2.00 moles of K3P?
Select one:
a. 6.00 mol K+ and 2.00 mol P3-
b. 3.00 mol K+ and 1.00 mol P3-
c. 1.00 mol K+ and 3.00 mol P3-
d. 2.00 mol K+ and 6.00 mol P3-
a. 6.00 mol K+ and 2.00 mol P3-
The best name for the covalent compound N2O4 is
Select one:
a. dinitrogen tetroxide.
b. nitrogen oxide.
c. nitrogen quartoxide.
d. dinitrogen quartoxide.
a. dinitrogen tetroxide.
The correct formula for the ionic compound containing Al+3 and PO43- would be
Select one:
a. Al3 (PO4)3
b. AlPO4
c. Al3(PO4)2
d. Al2(PO4)3
b. AlPO4
The correct formula of an ionic compound containing Fe 2+ and PO43-
Select one:
a. FePO4
b. Fe2(PO4)3
c. Fe (PO4)2
d. Fe3 (PO4)2
d. Fe3 (PO4)2
